The Compendium of Bheḷa 1.7.13

1.7.13

caturdaśīṃ pañcadaśīmaṣṭamīṃ ca vivarjayet | pibetkṣīraṃ ghṛtaṃ nityam āyuṣyakaraṇaṃ hitam ||

One should avoid the fourteenth, the fifteenth, and the eighth [lunar days]; / one should drink milk and ghee daily, which promotes lifespan and is wholesome.