Sahih Bukhari
Hiring
Volume: 003 / Book Number: 036 / Hadith Number: 465
Narrated Aisha:
(the wife of the Prophet) Allah's Apostle and Abu Bakr hired a man from the tribe of Bani-Ad-Dil as an expert guide who was a pagan (follower of the religion of the pagans of Quraish). The Prophet and Abu Bakr gave him their two riding camels and took a promise from him to bring their riding camels in the morning of the third day to the Cave of Thaur.