大乘起信論義記 3.370

3.370

於中種性等，即因等也；發心等，即行等也；所證等，即證真等也；無有下，明時等也。

Within this, equality of lineage is equality of cause; equality of arousing the mind is equality of practice; equality of what is realized is equality of realizing tathatā; from 'there is no' onward explains equality of time.