Sahih Al Bukhari – Book of Hiring
Volumn 003, Book 036, Hadith Number 470.
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Narated By Abu Huraira Razi Allah Anhu: The Prophet
Peace Be Upon Him said, “Allah said, ‘I will be an opponent to three types of people on the Day of Resurrection:
1. One who makes a covenant in My Name, but proves treacherous.
2. One who sells a free person and eats his price.
3. One who employs a laborer and takes full work from him but does not pay him for his labour.'”
Covenant means: an agreement, usually formal, between two or more persons to do or not dosomething specified.
treacherous means: unfaithful, faithless, treasonous. 2. deceitful. (dhoka)