Narrated Aisha, Ummul Mu'minin:

A man bought a slave, and he remained with him as long as Allah wished him to remain. He then found defect in him. He brought his dispute with him to the Prophet ﷺ and he returned him to him. The man said: Messenger of Allah, my slave earned some wages. The Messenger of Allah ﷺ then said: Profit follows responsibility.

Abu Dawud said: This chain of narrators (of this version) is not reliable.

حَدَّثَنَا إِبْرَاهِيمُ بْنُ مَرْوَانَ، حَدَّثَنَا أَبِي، حَدَّثَنَا مُسْلِمُ بْنُ خَالِدٍ الزَّنْجِيُّ، حَدَّثَنَا هِشَامُ بْنُ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، رضى الله عنها أَنَّ رَجُلاً، ابْتَاعَ غُلاَمًا فَأَقَامَ عِنْدَهُ مَا شَاءَ اللَّهُ أَنْ يُقِيمَ ثُمَّ وَجَدَ بِهِ عَيْبًا فَخَاصَمَهُ إِلَى النَّبِيِّ ﷺ فَرَدَّهُ عَلَيْهِ فَقَالَ الرَّجُلُ يَا رَسُولَ اللَّهِ قَدِ اسْتَغَلَّ غُلاَمِي . فَقَالَ رَسُولُ اللَّهِ ﷺ
" الْخَرَاجُ بِالضَّمَانِ " . قَالَ أَبُو دَاوُدَ هَذَا إِسْنَادٌ لَيْسَ بِذَاكَ .