The World Federation One Stop Fiqh

Ritual 388

If there is a doubt that an animal is emaciated, but is slaughtered in the name of Allah, and it transpires that it is fat and sound, it will be sufficient for the sacrifice.

The same rule applies if a pilgrim entertains a doubt, after the animal was slaughtered, as to whether it was carried out in Mina or elsewhere. However, the doubt may revolve around whether he sacrificed an animal at all. If it arose after shaving the head or taqseer, the doubt should be ignored. Otherwise, he needs to return to Mina and offer hady there.