大乘起信論裂網疏 5.69

5.69

菩薩如是發心之時，則得少分見佛法身，能隨願力現八種事：謂從兜率天宮來下（一）、入胎（二）、住胎（三）、出胎（四）、出家（五）、成佛（六）、轉法輪（七）、般涅槃（八）。

"When a bodhisattva generates the mind like this, they attain a partial vision of the Buddha's dharmakāya, and are able to manifest eight kinds of events in accordance with the power of their vows: namely, descending from the Tuṣita heaven palace (one), entering the womb (two), dwelling in the womb (three), leaving the womb (four), going forth from home (five), achieving buddhahood (six), turning the wheel of the Dharma (seven), and entering parinirvāṇa (eight)."