What are the prescribed acts for the pilgrim on the Day of Sacrifice, and are they in a specific order?

Question : This questioner says: Shaykh Muhammad, what are the prescribed acts for the pilgrim on the Day of 'Id al-Adha, and are they in a specific order?

Answer : The prescribed acts on the Day of Sacrifice include those specific to Muzdalifah, which are praying there, i.e., in Muzdalifah, then standing at the eastern part of the Haram for supplication, or in any place in Muzdalifah, then proceeding to Mina. And among the acts of the Day of Sacrifice are those prescribed in Mina, which are first stoning the Jamarat al-Aqabah, then slaughtering the sacrificial animal, then shaving or shortening the hair, then tawaf and sa'y. They are in this order: starting first with stoning the Jamarat al-Aqabah, then slaughtering, then shaving or shortening the hair, then tawaf, then sa'y.
However, if one performs some of them before others, there is no harm, because the Prophet (peace and blessings be upon him) was asked on the Day of Sacrifice about advancing or delaying . So if he stoned and then shaved before slaughtering, there is no harm. If he stoned and then went down to Makkah and performed tawaf and sa'y before slaughtering and shaving, there is no harm. If he stoned and slaughtered and then went down to Makkah and performed tawaf and sa'y before shaving, there is no harm. If he went directly from Muzdalifah to Makkah and performed tawaf and sa'y before stoning, slaughtering, and shaving, there is no harm. If, upon arriving in Makkah, he started with sa'y before tawaf, there is no harm, because the Prophet (peace and blessings be upon him) was asked about that, and he was not asked about anything being advanced or delayed except that he said, "Do it, and there is no harm." If he delays the Tawaf al-Ifadah to the second, third, or fourth day, or to any time after that, as long as he performs it before the month of Dhul-Hijjah ends, there is no harm. When he stons and shaves, the first state of release is achieved; everything of the prohibitions of ihram becomes permissible for him except women. When he performs tawaf and sa'y, women become permissible for him. What is narrated from the Prophet (peace and blessings be upon him and his family) that whoever does not perform the Tawaf al-Ifadah on the day of 'Id before the sun sets returns to the state of ihram is a weak hadith that is not authentic in its chain to be ordered for people to act upon and be burdened with, because it contradicts the apparent meaning of the authentic hadiths. Also, it is a very important act, and the motivations to transmit it are abundant. It is not possible that it would be hidden from the Muslim community such that only individuals act upon it. It is not possible that the compilers of the authentic collections and the Sunan would overlook it, given their eagerness and pursuit of the hadiths of the Prophet (peace and blessings be upon him), such that only one or two of the compilers of the Sunan narrate it. The hadith is weak and it is not obligatory to act upon it. Rather, we say that when a person achieves the first state of release by stoning with shaving, or by stoning alone, according to the disagreement among scholars, he does not return to the state of ihram except with a new act of worship.