Tribute, Spoils, and Rulership (Kitab Al-Kharaj, Wal-Fai' Wal-Imarah)
Dawud :: Book 19 : Hadith 3046
Narrated A number of Companions of the Prophet:
Safwan reported from a number of Companions of the Apostle of Allah (peace_be_upon_him) on the authority of their fathers who were relatives of each other. The Apostle of Allah (peace_be_upon_him) said: Beware, if anyone wrongs a contracting man, or diminishes his right, or forces him to work beyond his capacity, or takes from him anything without his consent, I shall plead for him on the Day of Judgment.