Bhagavad Gita 17.10

The ignorant love food that is stale, not nourishing, putrid, and corrupt; the leftovers of others, and unclean.

यातयामं गतरसं पूति पर्युषितं च यत्।उच्छिष्टमपि चामेध्यं भोजनं तामसप्रियम्॥

yātayāmaṃ gatarasaṃ pūti paryuṣitaṃ ca yat|ucchiṣṭamapi cāmedhyaṃ bhojanaṃ tāmasapriyam||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).