大乘起信論略述 2.237

2.237

論。若觀彼佛至住正定故　述曰。此顯住正定也。若至淨土得聞法已。漸次修行觀見彼佛真如法身。名畢竟生。得住種性正定位故。即佛法身名為佛家。觀心隨順名往生也。

[Treatise:] "If one contemplates that Buddha's […] because of abiding in correct determination." / [Exposition:] This shows abiding in correct determination. If, upon arriving in the pure land and hearing the Dharma, one gradually cultivates and contemplates that Buddha's tathatā-dharmakāya, this is called "ultimate rebirth," because one attains abiding in the correct deterministic stage of the lineage. That is, the Buddha's dharmakāya is called the household of the Buddha, and the contemplative mind conforming with it is called rebirth.