Yes, he has to abstain until after the sacrifice is completed.

If a person is offering sacrifice at home, is he/she supposed to abstain from cutting nails or having a haircut after making niyyah? Or is only for the pilgrim?

Slaughtering | September 16, 2015 3:03 am
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If a mother is not able to buy an animal for the sacrifice, is it okay if the child buys the animal to be slaughtered for the sacrifice, for the intention for both the mother and the child to get the reward?
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I want to know that can I include a persons share in animal who’s earning is not according to sharia i.e riba and interest from banks…. Won’t it b a wrong thing on my part to ask him not to include his share because his money is not halal?