Garudapurana 3.29.18

3.29.18

tadvaiṣṇavaistyājyamevaṃ sadaiva vastraṃ dagdhaṃ sandhijaṃ caiva janyam //
cikitsitaṃ paraduḥ khaṃ khagendra darerbhaktaistyājyamevaṃ sadaiva //

That should always be abandoned by Vaiṣṇavas, as well as burnt cloth, that produced at a junction, and childbirth; / treating another's suffering [for selfish gain], O King of Birds, should always be abandoned by Hari's devotees.