大乘起信論裂網疏 5.51

5.51

"There may be sentient beings whose roots of goodness from long ago are feeble and few, and because deep and thick afflictions cover their minds, even though they encounter Buddhas and bodhisattvas, serving and making offerings to them, they only plant the seeds for rebirth as humans and devas, or plant the seeds of bodhi for the two vehicles; or there may be some who seek the path of great bodhi, but their faculties are indeterminate, sometimes advancing and sometimes regressing."