Apastambasmriti 3.1

3.1

gṛhe'vijñātasyāntyajāteniveśane bālādiviṣaye ca prāyaścittam
antyajātimavijñāto nivasedyaśca veśmani
samyagjñātvā tu kālena dvijāḥ kurvantyanugraham

Now the penance regarding an unknown outcaste staying in the house, and concerning children and others: / When an unknown outcaste lives in one's house, / having properly discovered it in course of time, the twice-born extend their favor.