佛祖統紀 4.11

4.11

五十三年（壬申）佛先往忉利天。三月安居。遣文殊詣母所。暫屈禮敬三寶。摩耶夫人聞之。乳自流出。直至佛口。即與文殊俱至佛所。佛為說法得須陀洹果。三月將盡欲出涅槃。帝釋作三道寶階。佛與母別。大眾導從。下還祇洹（佛升忉利經）。

In the fifty-third year (ren-shen), the Buddha first went to Trāyastriṃśa Heaven for the three-month retreat. He sent Mañjuśrī to his mother's place to invite her briefly to pay homage to the Three Jewels. When Queen Māyā heard of this, her milk flowed spontaneously directly into the Buddha's mouth. She immediately came with Mañjuśrī to the Buddha's presence. The Buddha preached the Dharma for her, and she attained the fruit of srotāpanna. As the three months were about to end, he wished to enter nirvāṇa. Śakra created three flight of jeweled steps. The Buddha bid farewell to his mother and, guided and accompanied by the great assembly, descended and returned to the Jetavana (Sutra on the Buddha Ascending to Trāyastriṃśa).