Muwatta Malik, Book 20, Hadith 855 (In-Book)

Yahya related to me from Malik from Nafi that Abdullah ibn Umar never used to tear the drapes of his sacrificial animals, and he would not drape them until he went from Mina to Arafa.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ لاَ يَشُقُّ جِلاَلَ بُدْنِهِ وَلاَ يُجَلِّلُهَا حَتَّى يَغْدُوَ مِنْ مِنًى إِلَى عَرَفَةَ ‏.‏

sunnah.com

also referenced under: Book 20, Hadith 152 (USC-MSA)