佛祖統紀 34.54

34.54

三年。二祖阿難陀（慶喜佛從弟）持法至二十年。於摩突羅國。以法藏付商那和修（此云草衣）復於恒河中流化成金地。為末田地（此云河中）五百仙人說法授記。

In the third year, the Second Patriarch, Ānanda (meaning 'Joyous Joy', cousin of the Buddha), having maintained the Dharma for twenty years, entrusted the treasury of the Dharma to Śāṇavāsa (translated as 'Hemp Clothes') in the kingdom of Mathurā. Furthermore, in the midst of the Ganges, he magically transformed [the waters] into golden earth, preaching the Dharma and bestowing prophecies upon Madhyāntika (translated as 'Mid-River') and five hundred rṣis.