Manava Dharmashastra 3.175

3.175

tu jātau parakṣetre pretya ceha ca
dattāni havyakavyāni nāśayanti pradāyinām //

But those two creatures, who are born of wives of other men, cause to the giver the loss (of the rewards), both in this life and after death, for the food sacred to gods or manes which has been given (to them).