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Based on the sutras, the Vinaya and later commentaries
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Nanda goes forth

Attested across multiple schools

On the day of the wedding of Nanda (the Buddha's half-brother, a Sakyan prince), the Buddha hands him his bowl to carry, has him follow to his lodging, and then has him go forth. The later commentaries of the Southern tradition say this was on the third day after the Buddha's arrival at .

Different Accounts

Order: the later commentaries of the Southern tradition say Nanda went forth on the third day and on the seventh; the Pali Vinaya and the Chinese Dharmaguptaka and Mahīśāsaka Vinayas, through 's words, also have Nanda go forth first, in the same order.

More differences between accounts (2)

Those who went forth in the same group: the Buddha biography Fangguang da zhuangyan jing says Nanda went forth at the same time as five hundred Sakyans and ; the Chinese Ekottarika Āgama says and were in the same group. The Pali Vinaya, however, places the going forth of the six Sakyan youths at , not on this occasion.

The Chinese and Tibetan Mūlasarvāstivāda Vinaya say Nanda's wife was named Sundarī, and that Nanda promised to return before the cosmetic mark on her forehead dried; the Buddha emitted golden light at his door, Nanda followed the Buddha to his lodging carrying the bowl, and the Buddha had Ānanda shave his head. In this version the place is the Many-Rooted Tree Park at the city of Jiebiluo (that is, Kapilavatthu), and no wedding is mentioned.

Dating

Year uncertain; the same return home as the other entries in this group. Possibly before the of Year 2 after the Awakening (the Buddha aged thirty-six), around Year 6 (aged forty), Year 7 (aged forty-one) or Year 12 (aged forty-six). The later commentaries of the Southern tradition say it was the third day after the arrival, but there is no settled answer as to the year of the return itself.

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Research Notes: Reliability, Dating and Sources
How Reliability Is Assessed

Recorded by three schools: the Pali canon of the Southern tradition, the Chinese Dharmaguptaka Vinaya (Sifen lü) and the Chinese Mahīśāsaka Vinaya (Wufen lü). Attested across multiple schools.

Dating Evidence and Precision

Commentarial dating (the canonical texts give no date; later commentaries record it). Time precision: fixed to the day.

Sources

Back to Events of uncertain year

Source text

日期怎麼讀

成道第幾年
從佛陀成道開始,每經過一次雨季安居算一年,每一年算到安居結束為止;所有年歲一律依二十九歲出家、三十五歲成道推算。
年份依據
區分經文自己明記、後世註解書記載、先後順序推定及年歲換算。
時間精確度
分別說明確定到日、月、年,或只能放入某幾年之間。
可信度
多派共傳、兩派記載、單派記載與後世補述,表達記載的共傳範圍;與時間及位置是否確定分開閱讀。