Manava Dharmashastra 7.56

Manvarthamuktāvalī 7.56

mūtraṃ purīṣaṃ śleṣmāṇaṃ mūtrādyamedhyaliptavastraṃ anyadvā bhuktocchiṣṭādyamedhyaṃ rudhiraṃ viṣāṇi ca kṛtrimākṛtrimabhedabhinnāni na jale prakṣipet|