瑜伽論記 6.252

6.252

第二思擇受用之意中，當隨因喻唯往施主家者，泰基同云：月能清涼益人，入施主家身有清涼益於施主，只如月也。今又更解，如涅槃經說：如空中月，從初一日至十五日，漸漸增長，善知識者亦復如是，命諸學人漸遠惡法增長善法。

Regarding the second, the intention of reflection upon consumption, "one should follow the cause and simile, only going to the homes of donors," Tai and Ji both say: "The moon is able to be cool and refreshing, benefiting people; entering the house of a donor, one's body brings coolness, benefiting the donor, just like the moon." Now there is another explanation: as the Mahāparinirvāṇa Sūtra says, just like the moon in the sky, which gradually waxes from the first day to the fifteenth day, a good spiritual friend is also like this, directing students to gradually distance themselves from bad dharmas and increase wholesome dharmas.