大乘起信論裂網疏 6.143

6.143

若一日一夜如說修行，所生功德無量無邊不可稱說，假令十方一切諸佛各於無量阿僧祇劫說不能盡，以真如功德無邊際故，修行功德亦復無邊。

"If for one day and one night one cultivates in accordance with the explanation, the merit produced is limitless, boundless, and ineffable. Even if all the Buddhas of the ten directions were each to speak of it for countless asaṃkhyeya kalpas, they could not exhaust it. Because the merits of tathatā are boundless, the merit of cultivation is likewise boundless."