Abu Dawud
The Rites of Hajj
Book Number: 004 / Hadith Number: 1758
Narated By Najiyah al-Aslami : The Apostle of Allah (pbuh) sent sacrificial camels with him (as offering to the Ka'bah). He then said: If any one of them becomes fatigued, slaughter it, dip its shoes in its blood, and leave it for the people (to eat).