大唐西域記 8.53

8.53

菩提樹垣外，西南窣堵波，奉乳糜二牧女故宅。其側窣堵波，牧女於此煮糜。次此窣堵波，如來受糜處也。

Within the walls of the Bodhi tree at each of the four angles is a great stupa. Formerly, when Tathagata received the grass of good omen (Santi), he walked on the four sides of the Bodhi tree from point to point; then the great earth trembled. When he came to the diamond throne, then all was quiet and peaceable again. Within the walls of the tree the sacred traces are so thick together that it would be difficult to recite each one particularly. At the south-west of the Bodhi tree, outside the walls, there is a stupa; this is where the old house of the two shepherd-girls stood who offered the rice-milk to Buddha. By the side of it is another stupa where the girls boiled the rice; by the side of this stupa Tathagata received the rice. Outside the south gate of the Bodhi tree is a great tank about 700 paces round, the water of which is clear and pure as a mirror. Nagas and fishes dwell there. This was the pond which was dug by the Brahmans, who were uterine brothers, at the command of Mahesvara (Ta-thseu-thsai).