Musannaf Ibn Abi Shaybah

Ibrahim has considered wearing the garment in a sadl manner during prayer as disliked. (Ibn al-Athir in al-Nihayah (2/355) states that sadl means to wear the garment in such a way that one puts his hands inside its inner part and performs bowing and prostration in this manner. According to another opinion, sadl means to place the middle part of the lower garment on the head and let its edges hang down on the right and left instead of placing them on the shoulders.)