Sahih Bukhari
Hiring
Volume: 003 / Book Number: 036 / Hadith Number: 470
Narrated Abu Huraira:
The Prophet 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; and
3. One who employs a laborer and takes full work from him but does not pay him for his lab our.' "