I said to Abu al-Hasan the First (as): "Can I use a shade while I am in Ihram?" Imam (as) said: "No." I asked: "What if I use a shade and offer expiation?" Imam (as) said: "No." I asked: "What if I fall ill?" Imam (as) said: "Use a shade and offer expiation." Then Imam (as) said: "Do you not know that the Messenger of Allah (swt) (peace be upon him and his family) said: 'There is no pilgrim who exposes himself to the sun while reciting the Talbiyah until the sun sets except that his sins disappear with the setting of the sun.'"