Bṛhaspati said:: When one spits, after oil bath, after, taking food, after wearing the clothes, when one touches other persons defiled by Ucchiṣṭa, after washing the feet, after talking to a person defiled by Ucchiṣṭa, after eating, when one is maintaining the physical purity for holy rites, in case of all doubts after untying the knot of the tuft of hair as well as without the sacred thread, (if one touches) aimlessly, on touching a camel or a sheep, on seeing persons who speak words that should not bespoken, touching (particles of food etc.) sticking to the teeth with the tongue producing a loud noise or by means of fingers or on seeing a fallen man.