How should one raise their hands if they are covered by clothing during prayer?
Chapter on the Description of Prayer
Al-Mughni
Book of Prayer
Primary text
If the hands are covered by clothing, they must be raised to a degree that is possible. Evidence for this is the narration from Wael ibn Hajar, who observed companions raising their hands under their garments during cold weather, with their hands moving beneath the clothes, sometimes up to their chests.