顯密圓通成佛心要集 2.31

2.31

若施諸仙，以淨飲食盛滿一器，誦前變食呪二七遍，投於淨流水中，即變成天仙美妙之食，供養百千俱胝恒河沙數諸仙。彼諸仙等得加持食，各各成就根本所願諸善功德。（若有善男子善女人等，以此密言加持於食施彼諸仙，能令現世壽命延長、福德安樂，心所見聞正解清淨，具足成就梵天威德，一切冤讐不能侵害。）

If giving to the ṛṣis, one fills a clean vessel with pure food and drink, chants the previous Food-Transforming Mantra fourteen times, and casts it into pure flowing water; it immediately transforms into the wonderful and exquisite food of the heavenly ṛṣis, making offerings to ṛṣis as numerous as hundreds of thousands of koṭis of Gaṅgā sands. Those ṛṣis, receiving the empowered food, each accomplish all the good merits of their fundamental aspirations. (If there are good men and good women who empower food with this esoteric mantra and give it to those ṛṣis, it will enable them in their present life to have their lifespans prolonged, enjoy merit, peace, and happiness, have pure right understanding of whatever their minds see and hear, be fully endowed with the majestic virtue of Brahmā, and be free from harm by any enemies.)