If the lost item is a sheep, should he keep it with him until its owner identifies it after a year, or should he sell it and then keep the proceeds?

Question:
Honorable Shaykh, may Allah grant you success, if the lost item is a sheep, should he keep it with him until its owner identifies it after a year, or should he sell it and then keep the proceeds?

Answer:
A sheep in the town, he does not take it; its owner will find it. But a sheep in the desert is at risk from a wolf or from being taken by someone else. Take it, as the Messenger (peace and blessings be upon him) said: If its owner comes, give him its value. If he does not come, it is yours. Yes.