Kaushitakagrihyasutra 2.7.23

2.7.23

ācāyahhmāṃsāśī brahmacārī grāmānniṣkrāmannaitānīkṣetānadhyāyān spṛśatāmuṃ piśitāmaṃ caṇḍālaṃ sūtikāntejanīmapahastakāṃ śmaśānaṃ sarvāṇi ca śyāmarūpāṇi yānyāsye na praviśeyuḥ \23\

The student, eating no meat, going out of the village, must not look at these: reasons for suspension of recitation, one who touches a corpse, raw flesh, a Caṇḍāla, a woman who has newly given birth, a woman with clipped fingers, a cremation ground, and all dark-colored things that could not enter the mouth.