大乘起信論義記 3.9

3.9

菩薩從初正信等者，十信之初創發心時，即觀本識自性緣起因果之體，得成正信，故《攝論》中約彼本識說云「菩薩初起，應先觀諸法如實因緣。」此之謂也。三賢位中意言比觀，故云觀察。地上證之未窮，故云少分，以其但覺住相、不覺生相故；如來四相俱了故，得窮源也。

"Bodhisattvas, who from their first generation of the mind of correct faith", and so forth: at the beginning of the ten faiths when they first generate the mind, they observe the essence of the cause and effect of the svabhāva-pratītyasamutpāda of the fundamental consciousness and attain the perfection of correct faith. Therefore, in the Mahāyānasaṃgraha, regarding that fundamental consciousness, it says: "When a bodhisattva first arises, he should first observe the true causes and conditions of all phenomena." This is what it means. In the ranks of the three ranks of worthies, by mental discourse they make comparative observation, hence it is said "observe". On the grounds, they realize it but not to the limit, hence it is said "partially", because they only awaken to the mark of abiding and do not awaken to the mark of arising; the Tathāgata completely comprehends all four marks, and therefore can fathom the source.