Is one sheep sufficient as udhiyah for one man and his family and whoever he wants among the Muslims?
بسم الله الرحمن الرحيم
(Fatwa: 1028/981/B=12/1437)
No, sheep, ram and goat may only suffice for a person. It is not lawful to share someone else in it.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband