Compiled by Imam Abu Dawud as-Sijistani
حَدَّثَنَا هَارُونُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنِي عَبْدُ الصَّمَدِ، حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، بِإِسْنَادِهِ وَمَعْنَاهُ زَادَ إِنْ وَجَدَ دَاءً فِي الثَّلاَثِ اللَّيَالِي رُدَّ بِغَيْرِ بَيِّنَةٍ وَإِنْ وَجَدَ دَاءً بَعْدَ الثَّلاَثِ كُلِّفَ الْبَيِّنَةَ أَنَّهُ اشْتَرَاهُ وَبِهِ هَذَا الدَّاءُ . قَالَ أَبُو دَاوُدَ هَذَا التَّفْسِيرُ مِنْ كَلاَمِ قَتَادَةَ .
"If he finds defect (in the slave) within three days, he may return it without evidence; if he finds a defect after three days, he will be required to produce evidence that he (the slave) had the defect when he bought it." Abu Dawud said: This explanation is from the words of Qatadah.