Hadith on Freedom: Expiation for beating slaves is to free them

Ibn Umar reported: The Messenger of Allah, peace and blessings be upon him, said, “Whoever strikes his slave-boy sharply without right, or punches him, the expiation for the sin is to emancipate him.”

Source: Ṣaḥīḥ Muslim 1657

Grade: Sahih (authentic) according to Muslim

عَنْ ابْن عُمَر أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ مَنْ ضَرَبَ غُلَامًا لَهُ حَدًّا لَمْ يَأْتِهِ أَوْ لَطَمَهُ فَإِنَّ كَفَّارَتَهُ أَنْ يُعْتِقَهُ

1657 صحيح مسلم كتاب الأيمان باب صحبة المماليك وكفارة من لطم عبده