Hasan
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا مُسْلِمُ بْنُ خَالِدٍ الزَّنْجِيُّ، حَدَّثَنَا هِشَامُ بْنُ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، أَنَّ رَجُلاً، اشْتَرَى عَبْدًا فَاسْتَغَلَّهُ ثُمَّ وَجَدَ بِهِ عَيْبًا فَرَدَّهُ . فَقَالَ يَا رَسُولَ اللَّهِ إِنَّهُ قَدِ اسْتَغَلَّ غُلاَمِي . فَقَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " الْخَرَاجُ بِالضَّمَانِ " .
It was narrated from 'Aishah that:a man bought a slave and put him to work, then he found some defect in him, so he returned him. He (the seller) said: "O Messenger of Allah he put my slave to work." The Messenger of Allah (ﷺ) said: "A slave's earnings belong to his guarantor