瑜伽師地論略纂 8.40

8.40

論「應隨月喻」者，謂月能清涼益人，入施主家，身有清涼，益於施主，亦如月也。

Regarding the treatise's "one should follow the analogy of the moon": this means that the moon can be refreshing and benefit people; when entering a donor's household, if one's person has coolness and benefits the donor, one is also like the moon.