Garudapurana 2.10.2

2.10.2

teṣāṃ vibhinnāhārāṇāṃ śrāddhaṃ vai tṛptidaṃ katham /
yadapyanyairdvijairbhuktaṃ hūyate yadi vānale //

For them who have different diets, how does a śrāddha grant satisfaction? / Even that which is eaten by other brahmins or offered into the fire—