It is narrated from Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) slaughtered some of his sacrificial animals with his own hand, and some were slaughtered by others.

It is narrated from Nafi‘ that Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said: Whoever makes a vow for a badnah (badnah refers to a camel, cow, or ox that is sent to Makkah for sacrifice), he should hang two sandals around its neck, perform ish‘ar (marking), and then slaughter it near the House of Allah or at Mina on the tenth of Dhul-Hijjah; there is no other place for this. And whoever makes a vow for sacrifice of a camel or cow, he has the choice to slaughter it wherever he wishes.

It is narrated from Hazrat Hisham bin Urwah that his father, Hazrat Urwah, used to slaughter his camels while they were standing.

Imam Malik, may Allah have mercy on him, said that it is not permissible for anyone to shave his head before the sacrifice of the Hady, nor is it permissible to perform the sacrifice before the dawn of the Day of Sacrifice. Rather, the sacrifice, changing of clothes, removal of dirt, and shaving of the head—all these actions should be done on the tenth day; before that, they are not permissible.

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said:“May Allah have mercy on those who shave their heads.”The Companions (may Allah be pleased with them) said: And those who shorten their hair, O Messenger of Allah! He (peace and blessings be upon him) said:“May Allah have mercy on those who shave their heads.”The Companions (may Allah be pleased with them) said: And those who shorten their hair, O Messenger of Allah! He (peace and blessings be upon him) said:“And those who shorten their hair.”

It is narrated from Abdur Rahman bin Qasim that his father, Qasim bin Muhammad, would enter into the state of ihram for Umrah in Makkah at night, perform tawaf and sa’i, and delay shaving his head until morning. However, until he shaved his head, he would not perform tawaf of the House of Allah. Sometimes he would come to the mosque and offer witr prayer, but would not go near the House of Allah.

Imam Malik, may Allah have mercy on him, said that Allah the Exalted said: «﴿ثُمَّ لْيَقْضُوا تَفَثَهُمْ﴾» "Then let them remove their dirt." Tafath refers to shaving the head, changing clothes, and what is related to these.

Imam Malik, may Allah have mercy on him, was asked: If a person forgets to shave his head during Hajj, should he shave in Makkah? He replied: Yes, he should do it, but shaving in Mina is better.

Imam Malik, may Allah have mercy on him, said: In our view, this ruling is agreed upon that no person should shave his head or cut his hair until he has performed the sacrifice, if he has a sacrificial animal with him, and he should not use any of the things that were forbidden in the state of Ihram until he exits Ihram in Mina on the Day of Sacrifice. Because Allah the Exalted has said: «﴿وَلَا تَحْلِقُوا رُءُوسَكُمْ حَتَّى يَبْلُغَ الْهَدْيُ مَحِلَّهُ﴾» "And do not shave your heads until the sacrificial animal reaches its place."

It is narrated from Nafi‘ that when Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) would finish the fasts of Ramadan and intended to perform Hajj, he would not cut the hair of his head or beard until he had performed Hajj.
Imam Malik (may Allah have mercy on him) said: This matter is not obligatory upon all people.