وَمَنِ اشْتَرَى عَبْدًا وَشَرَطَ الْبَرَاءَةَ مِنْ كُلِّ عَيْبٍ فَلَيْسَ لَهُ أَنْ يَرُدَّهُ بِعَيْبٍ وَإِنْ لَمْ يُسَمِّ الْعُيُوبَ وَلَمْ يَعُدَّهَا
Translation: Where a sale includes a general release from every defect, the purchaser in this historical case cannot return for a defect, even though particular defects were not individually named or listed.
Al-bara’ah min kull ‘ayb means a general contractual release from defects. Quduri says an exhaustive list of each defect is not required for the described waiver.
Do not conflate the default defect option with a separate waiver condition. Contemporary consumer law, fraud, and different contractual contexts require separate examination.