Narrated Ibn Abbas (may Allah be pleased with them) that the Messenger of Allah (peace and blessings of Allah be upon him) was prevented from entering Makkah and performing Umrah (in the year of Hudaybiyyah), so he shaved his head (there in Hudaybiyyah), had relations with his wives, and slaughtered the sacrificial animals. Then, in the following year, he performed the Umrah as compensation for that.