Ahmad ibn Muhammad from al-Hasan ibn Ali ibn Yaqtin from his brother al-Husayn from their father Ali ibn Yaqtin from Abu al-Hasan عليه السلام, peace be upon him, who said: I asked Imam al-Kadhim عليه السلام about the ship, if its rider is not able to stand, should he pray while sitting, gesturing, or prostrating? Imam عليه السلام said: “He should stand, even if he bends his back.”