وَ رُوِيَ عَنْ عَبْدِ اَللَّهِ بْنِ اَلْمُغِيرَةِ قَالَ: قُلْتُ لِأَبِي اَلْحَسَنِ اَلْأَوَّلِ عَلَيْهِ اَلسَّلاَمُ أُظَلِّلُ وَ أَنَا مُحْرِمٌ قَالَ «لاَ» قُلْتُ فَأُظَلِّلُ وَ أُكَفِّرُ قَالَ «لاَ» قُلْتُ فَإِنْ مَرِضْتُ قَالَ «ظَلِّلْ وَ كَفِّرْ » ثُمَّ قَالَ «أَ مَا عَلِمْتَ أَنَّ رَسُولَ اَللَّهِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ قَالَ «مَا مِنْ حَاجٍّ يَضْحَى مُلَبِّياً حَتَّى تَغِيبَ اَلشَّمْسُ إِلاَّ غَابَتْ ذُنُوبُهُ مَعَهَا ».
It was narrated from Abdullah ibn al-Mughira, who said: I said to Abu al-Hasan the First (a.s): "Can I use a shade while I am in Ihram?" Imam (a.s) said: "No." I asked: "What if I use a shade and offer expiation?" Imam (a.s) said: "No." I asked: "What if I fall ill?" Imam (a.s) said: "Use a shade and offer expiation." Then Imam (a.s) 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.'"