大唐西域記 8.55

8.55

帝釋化池東，林中有目支隣陀龍王池，其水清黑，其味甘美。西岸有小精舍，中作佛像。昔如來初成正覺，於此宴坐，七日入定。時此龍王警衛如來，即以其身繞佛七匝，化出多頭，俯垂為蓋，故池東岸有其室焉。

Still to the south there is a tank; formerly, when Tathagata had just acquired perfect enlightenment, he wished to bathe; then Sakra (Shi), king of Devas, for Buddha's sake, caused a pond to appear as a phantom. On the west is a great stone where Buddha washed his robes, and then wished to dry them; on this, Sakra, king of Devas, brought this rock from the great Snowy Mountains. By the side of this is a stupa; this is where Tathagata put on (?) the old garments offered him. Still to the south in a wood is a stupa; this is where the poor old woman gave the old garments which Tathagata accepted. To the east of the pond which Sakra caused to appear, in the midst of a wood, is the lake of the Naga king Muchilinda (Mu-chi-lin-t'o). The water of this lake is of a dark blue colour, its taste is sweet and pleasant; on the west bank is a small vihara in which is a figure of Buddha. Formerly, when Tathagata first acquired complete enlightenment, he sat on this spot in perfect composure, and for seven days dwelt in ecstatic contemplation. Then this Muchilinda Naga-raja kept guard over Tathagata; with his folds seven times round the body of Buddha, he caused many heads to appear, which overshadowed him as a parasol; therefore to the east of this lake is the dwelling of the Naga. To the east of the tank of Muchilinda in a vihara standing in a wood is a figure of Buddha, which represents him as thin and withered away.