TL;DR: Cúng tuần thất is seven offerings of rice or prayers for deliverance within the 49 days after a death, one ceremony each week; the 49-day ceremony (chung thất) is the seventh, marking the end of the intermediate state (thân trung ấm) according to Northern Buddhism; the 100-day ceremony (bách nhật) is the tuần tốt khốc, meaning the ending of weeping, a separate funeral observance that does not belong to the 49-day sequence. Under the old custom, mourning attire was only put aside after the giỗ observances had ended, even though some families end mourning right on the 100th day.
How do tuần thất, the 49-day rite and the 100-day rite differ?
These three terms are often used interchangeably, but they are not the same milestone and do not share the same origin. Tuần thất is a series of seven rites held over the 49 days after a death, one each week. The 49-day rite (also called chung thất, giỗ 49 ngày) is the seventh offering, marking the end of the thân trung ấm period in Northern Buddhist understanding. The 100-day rite (also called bách nhật; the ritual manuals call it tốt khốc, "the end of wailing") is a separate rite of the funeral cycle, and is not part of the 49-day series[6].
The first tuần thất falls on the seventh day after death, the second on the fourteenth, and so on until the seventh, which is the 49th day[3].
Where does the custom of the 49-day rite come from?
The custom of the 49-day rite has two overlapping origins: the old Chinese folk belief about hun and po souls, and the thân trung ấm doctrine of Northern Buddhism.
In old Chinese folk belief, a person has three hồn and seven vía. At death, one vía is lost each week, and after seven weeks (49 days) the seven vía are gone, and the deceased is held to have dissolved entirely and been reborn into another life[1]. That is why an offering is made each week, called cúng thất, and the 49th day is called giỗ 49 ngày.
The concept of thân trung ấm is held to have taken shape when Northern Buddhism spread to China and merged with local beliefs. Thân trung ấm is the intermediate body before rebirth, lasting at most 49 days[1]. Southern Buddhism, following suttas in the Anguttara Nikaya and Majjhima Nikaya, has no concept of 49 days or thân trung ấm, holding that rebirth happens immediately according to kamma[1].
The Kṣitigarbha Bodhisattva Original Vow Sutra teaches that after a relative dies, if one makes vegetarian offerings and prays sincerely, both the living and the dead benefit[2]. According to this sutra, after 49 days, called chung thất, the spirit is reborn according to its kamma: if it has done much good it is born into a good realm, and if not, into a suffering realm[2].
How is tuần thất understood and practised?
During the thân trung ấm period, the hương linh is held to still be able to receive the offerings made by relatives, but only to enjoy their flavour. For this reason thân trung ấm is also called hương ấm[3]. Within the 49 days, relatives are advised to make daily offerings of rice and water, and to be especially solemn on the tuần thất days, possibly going to a temple or inviting monks to the home to perform a cầu siêu rite[3].
After 49 days, when the consciousness has found its place of rebirth, daily rice offerings are usually considered no longer necessary. One reborn in a heavenly realm does not eat human food; one fallen into hell cannot receive it either; only beings among ghosts and spirits can enjoy offerings[3]. Still, on death anniversaries and at Tết, offerings of rice and water are maintained as a tradition of gratitude[3].
How do the 49-day rite and the 100-day rite differ?
The core difference lies in their origin and meaning, not only in the number of days. Phan Kế Bính records in Việt Nam phong tục: the forty-ninth day is the chung thất, when some families hold a vegetarian rite at the pagoda; the hundredth day is the tốt khốc, marked by one offering feast, after which the twice-daily rice offerings stop; mourning clothes are put away only at the đàm rite, two months after the second death anniversary[6].
| Criterion | 49-day rite (chung thất) | 100-day rite (bách nhật) |
|---|---|---|
| Main origin | Northern Buddhism, thân trung ấm concept | The funeral cycle of the ritual manuals: tốt khốc (the end of wailing) |
| Meaning | Ends the thân trung ấm period, prays for the hương linh | Wailing and the twice-daily rice offerings stop; mourning clothes are still worn until after the second anniversary |
| Timing | 49th day after death | 100th day after death |
| How it is done | Vegetarian offerings, incense and flowers, possibly offerings to monks | One offering feast; some families cut the mourning band and burn mourning items on this day |
From the Buddhist view, whether a person is liberated depends entirely on the kamma they created while alive. Prayers and merit dedicated by relatives only add a supporting condition and are secondary[4]. So if a family wishes to pray for the deceased, it is better to do so as early as possible, not necessarily waiting for the exact 49th day[4].
How does practice differ from place to place and family to family?
The Gia Định thành thông chí by Trịnh Hoài Đức records that in the old Gia Định region there was already a custom of mourning according to Buddhism, with offerings until the 49th day[2]. This is one of the early records of the custom in the South.
Practice differs from one home village and one family to the next, and this can cause disagreement within a family. One case reported in Giác Ngộ newspaper: the mother died, the children wanted to hold the cầu siêu rite on the chung thất day, but the father insisted on the local custom of the 100-day rite and would cut the mourning band and burn mourning items on that day[4]. The paper's advisory group advised following local custom, while the children could organise prayers and offerings earlier to dedicate merit to the mother[4].
What should be offered at the 49-day rite, and how?
Many monks hold that at the 49-day rite one should offer vegetarian food to the deceased, since non-vegetarian offerings involve killing and add to the deceased's kamma[2]. During the period when kamma is being determined, one should eat vegetarian and recite the Buddha's name so the deceased may be at peace[2].
As for the ritual form, depending on the requests of the officiating monk and local features, the 49-day offering may include various items. Some places offer dishes the deceased liked in life; others hold that doing so makes the spirit linger in the world and unable to leave peacefully[2].
As for merit-making, the key point is to take the practice of giving as the foundation. A family may give away the deceased's estate, or give away the wealth of relatives and friends to dedicate to the deceased[5]. The Kinh Vô thường teaches that after a relative dies, one should take the deceased's new clothes or the living's possessions, divide them into three parts, and make offerings to the Three Jewels on behalf of the dead[5].
Common misunderstandings about tuần thất and the 49-day rite
One common misunderstanding is that the spirit lingers because it misses its descendants, and only after 49 days does it find liberation. This view has no basis in Buddhist teaching[1].
Another misunderstanding is that offering rice and đốt vàng mã is to "ask" for well-being and to avert misfortune for the living. The origin of đốt vàng mã is held to come from Confucianism, when people long ago burned real money and real goods, later switching to hell money and paper items as a symbol of filial piety[1].
It should also be noted that cầu siêu is not limited to 49 days. Cầu siêu means praying to pass over, from dark and evil realms to good and peaceful ones. In that sense one can pray at any time, for oneself and for others[5]. After 49 days, Buddhists and relatives may still continue to chant sutras and recite the Buddha's name, which is very good[5].
Conclusion: how should this be understood and practised?
The three rites do not exclude one another. Tuần thất is the series of seven rites over 49 days, the 49-day rite is the last of that series, and the 100-day rite is the tốt khốc, a separate rite of the funeral cycle. Depending on locality and family tradition, some places hold all three, others only one or two.
From the Buddhist view, what matters is not whether the rite is on the right or wrong day, but sincerity of heart and the good deeds dedicated to the deceased. If a family is in financial difficulty, they should act according to their means and conditions, doing as much as they can, with a sincere heart[2].
Nhật Nguyệt's suggestion: When family members differ on how to practise, put harmony first. One can hold the cầu siêu rite earlier according to the Buddhist view, while still respecting local custom such as the 100-day rite, so that both the living and the dead benefit and no discord arises in the family.
