大唐西域記 4.28

4.28

伽藍北巖間，有石室，高二十餘尺，廣三十餘尺，四寸細籌填積其內。尊者近護說法化導，夫妻俱證羅漢果者，乃下一籌，異室別族，雖證不記。

To the north of the sanghārāma, in a cavern (or between two high banks), is a stone house about 20 feet high and 30 feet wide. It is filled with small wooden tokens (slips) four inches long. Here the honourable Upagupta preached; when he converted a man and wife, so that they both arrived at (confronted) the fruit of Arhatship, he placed one slip (in this house). He made no record of those who attained this condition if they belonged to different families or separate castes (tribes). Twenty-four or five li to the south-east of the stone house there is a great dry marsh, by the side of which is a stūpa. In old days the Tathāgata walked to and fro in this place. At this time a monkey holding (a pot of) honey offered it to Buddha. Buddha hereupon ordered him to mingle it with water, and to distribute it everywhere among the great assembly. The monkey, filled with joy, fell into a deep hole and was killed. By the power of his religious merit he obtained birth as a man. To the north of the lake not very far, in the midst of a great wood, are the traces of the four former Buddhas walking to and fro. By the side are stūpas erected to commemorate the spots where Śāriputra, Mudgalaputra, and others, to the number of 1250 great Arhats, practised samādhi and left traces thereof. The Tathāgata, when in the world, often traversed this country preaching the law. On the places where he stopped there are monuments (or posts) with titles on them.