Manava Dharmashastra 11.191

11.191

yeṣāṃ dvijānāṃ sāvitrī nānūcyeta yathāvidhi
tāṃś cārayitvā trīn kṛcchrān yathāvidhy upanāyayet //

Let him not dwell together with the murderers of children, with those who have returned evil for good, and with the slayers of suppliants for protection or of women, though they may have been purified according to the sacred law.