仁王護國般若波羅蜜多經疏 3.177

3.177

問：一世界中多佛並出否？答：輪王尚無二並出者，況乎大覺二並出耶。若爾，如何恒沙菩薩現身成佛？此亦不然，餘界何失？如《法花經》彼龍女故。

Question: Can multiple buddhas appear concurrently in a single world? Answer: Even wheel-turning kings do not appear concurrently as two, how much less could two Great Awakened Ones appear concurrently! [Objection:] If so, how can bodhisattvas as numerous as the sands of the Ganges directly attain buddhahood in their bodies? [Reply:] This objection is also invalid. What fault is there if it is in other worlds? It is just like the nāga maiden in the Lotus Sūtra.