The sacrifice (hadyu) is wajib for jamaah haji performing Haji al-Tamattu and Haji al-Qiran, based on Al-Al-Quranic verse: 'And whoever enjoys Umrah followed by Haji must offer what is easily available of sacrificial animal. But whoever cannot find (one) — then a fast of three days during Haji and seven when you return home. That is ten complete days' (2:196). This verse establishes both the obligation of sacrifice and the alternative of fasting for those unable to afford it.
Sheikh Ibn Baz explained that the sacrifice is a gratitude offering (shukr) for the blessing of combining Umrah and Haji in one journey, saving the jamaah haji the cost and effort of separate trips. The minimum acceptable sacrifice is one sheep or goat that meets the age requirements (six months for sheep, one year for goats). Alternatively, a jamaah haji may share in a one-seventh portion of a camel or cow (seven jamaah haji sharing one camel or cow). The animal must be free of defects that would disqualify it.
Sheikh Ibn Uthaymeen clarified that jamaah haji performing Haji al-Ifrad (Haji alone without Umrah) are not required to offer a sacrifice, as they did not combine two acts of worship. He also noted that residents of Mekkah who perform Tamattu are not required to offer a sacrifice menurut jumhur ulama, based on the continuation of the verse: 'This is for those whose family is not present at al-Masjidil Haram.' The sacrifice obligation applies to non-Mekkah residents who perform Tamattu or Qiran.