(12) باب فَضْلِ النَّفَقَةِ عَلَى الْعِيَالِ وَالْمَمْلُوكِ وَإِثْمِ مَنْ ضَيَّعَهُمْ أَوْ حَبَسَ نَفَقَتَهُمْ عَنْهُمْ
Khaithama reported:
While we were sitting in the company of 'Abdullah b. 'Umar there came in his steward. He (Ibn 'Umar) said: Have you supplied the provision to the slaves? He said: No. Upon this he said: Go and give (the provision) to them, for the Messenger of Allah (ﷺ) has said: This sin is enough for a man that he withholds the subsistence from one whose master he is.
Reference: Sahih Muslim 996
In-book reference: Book 12, Hadith 49
USC-MSA web (English) reference(deprecated numbering scheme): Book 5, Hadith 2182