Wages (Kitab Al-Ijarah)
Dawud :: Book 23 : Hadith 3555
Narrated Safwan ibn Umayyah:
The Apostle of Allah (peace_be_upon_him) borrowed coats of mail from him on the day of (the battle of) Hunayn. He asked: Are you taking them by force. Muhammad? He replied: No, it is a loan with a guarantee of their return.