11. The Rites of Hajj (Kitab Al-Manasik Wa'l-Hajj) - كتاب المناسك
19) Chapter: Regarding The Sacrificial Animal Being Unable To Continue Traveling Before Reaching Makkah
Narrated Ali ibn AbuTalib:
When the Messenger of Allah (ﷺ) sacrificed the camels, he sacrificed thirty of them with his own hand, and then commanded me (to sacrifice them), so I sacrificed the rest of them.