” قَالَ اللَّهُ تَعَالَى: ثَلَاثَةٌ أَنَا خَصْمُهُمْ يَوْمَ الْقِيَامَةِ: رَجُلٌ أَعْطَى بِي ثُمَّ غَدَرَ (1)، وَرَجُلٌ بَاعَ حُرًّا فَأَكَلَ ثَمَنَهُ، وَرَجُلٌ اسْتَأْجَرَ أَجِيرًا فَاسْتَوْفَى مِنْهُ وَلَمْ يُعْطِ أَجْرَهُ”
On the authority of Abu Hurayrah (may Allah be pleased with him), who said that the Messenger of Allah (peace and blessings of Allah be upon him) said:
“Allah the Almighty said:
‘There are three (1) whose adversary I shall be on the Day of Resurrection: a man who has given his word by Me and has broken it; a man who has sold a free man (2) and has consumed the price; and a man who has hired a workman, has exacted his due in full from him and has not given him his wage.'”
(1) i.e. types of men.
(2) i.e. a man who has made a slave of another and has sold him.
[Bukhari (also by Ibn Majah and Ahmad ibn Hanbal).]