Is it recommended to offer animal sacrifice on behalf of Prophet Muhammad s.a.w.s? Can we offer animal sacrifice on behalf of our deceased relatives? Can we do 1 sacrifice on behalf of all deceased?

Please provide the related Hadith for the first question. For the third question, can we do a single sacrifice and request Allah s.w.t. to forward the Sawaab to all our Marhoomeen or do we need to do one sacrifice for each relative? Would this Isaal-e-Sawaab be any different than forwarding the reward for reading Qur?an or doing acts of charity? If so, why?