A man who enters ihram for Umrah and is prevented

Abd al-Rahman bin Yazid said: We set out to perform Umrah. When we reached Dhat al-Shuquq, one of our companions was bitten by a snake. We started looking along the road for someone to ask what should be done for him. Suddenly we saw that Sayyiduna Ibn Mas'ud (may Allah be pleased with him) was in a riding party. We said: One of our companions has been bitten by a snake. He said: Fix a particular day between yourselves and your companion, and send a sacrificial animal on his behalf. When that animal has been sacrificed, that person comes out of ihram on that day, and he must make up that Umrah.

Abu al-Ala bin al-Shikhkhir said: I set out intending Umrah. I was still on the way when I fell from my mount and my leg was broken. I sent a man to Sayyiduna Ibn Abbas (may Allah be pleased with them both) and Sayyiduna Ibn Umar (may Allah be pleased with them both) to ask them. Both of them said: Umrah has no fixed time like Hajj, so he is not to come out of ihram until he has performed the tawaf. The narrator said: I stayed at al-Dathinah for five or eight months.

Tawus said about a person who enters ihram for Umrah and is then struck by some hindrance: He should send a sacrificial animal (hady) and estimate in how many days it will arrive, stay for that many days, then wait a few more days as a precaution, and then come out of ihram.