Others regarded it as disliked only when the garment is draped over an izār (lower wrap) and not when one is wearing a qamīṣ (tunic), thereby harmonising the various reports and interpreting the prohibition in light of customary dress.
They then differed as to whether sadl is forbidden to the extent that it nullifies the prayer. Ibn Abī Mūsā said: if someone prays while doing sadl, there are two transmitted opinions regarding whether he must repeat the prayer—the more apparent of the two being that he does not repeat it. Abū Bakr ʿAbd al-ʿAzīz stated: “If his private parts are not exposed, then by consensus he is not required to repeat.” Some scholars did not deem sadl disliked at all; this is the position of Mālik and others.
The sadl in question is to place the garment over one shoulder without casting either of its ends over the other shoulder. This is the explicit clarification transmitted from Aḥmad, who explained that it was the practice of the Jews. Ḥanbal reported: “Abū ʿAbd Allāh said: sadl is to let one end of the izār hang down without folding it back over oneself; it is the dress of the Jews, and it applies to any garment.”