Sahih Muslim 1659e
Abu Mas'ud reported that he had been beating his slave and he had been saying: I seek refuge with Allah, but he continued beating him, whereupon he said: I seek refuge with Allah's Messenger, and he spared him. Thereupon Messenger of Allah ﷺ said: By Allah, God has more dominance over you than you have over him (the slave). He said that he set him free. This hadith has been narrated on the authority of Shu'ba with the same chain of transmitters, but made no mention of (these words) of his: I seek refuge with Allah, I seek refuge with Messenger of Allah ﷺ.
وَحَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، وَابْنُ، بَشَّارٍ - وَاللَّفْظُ لاِبْنِ الْمُثَنَّى - قَالاَ حَدَّثَنَا ابْنُ، أَبِي عَدِيٍّ عَنْ شُعْبَةَ، عَنْ سُلَيْمَانَ، عَنْ إِبْرَاهِيمَ التَّيْمِيِّ، عَنْ أَبِيهِ، عَنْ أَبِي مَسْعُودٍ، أَنَّهُ كَانَ يَضْرِبُ غُلاَمَهُ فَجَعَلَ يَقُولُ أَعُوذُ بِاللَّهِ - قَالَ - فَجَعَلَ يَضْرِبُهُ فَقَالَ أَعُوذُ بِرَسُولِ اللَّهِ . فَتَرَكَهُ فَقَالَ رَسُولُ اللَّهِ ﷺ " وَاللَّهِ لَلَّهُ أَقْدَرُ عَلَيْكَ مِنْكَ عَلَيْهِ " . قَالَ فَأَعْتَقَهُ .