The Sufficient (Vol 4) · Hadith 1263 (#Ḥadīth #9)
Chapter 90 | Use of Shadow in the State of al-’Ihram
9ـ أَحْمَدُ بْنُ مُحَمَّدٍ عَنْ إِبْرَاهِيمَ بْنِ أَبِي مَحْمُودٍ قَالَ قُلْتُ لِلرِّضَا (عَلَيْهِ السَّلاَم) الْمُحْرِمُ يُظَلِّلُ عَلَى مَحْمِلِهِ وَيَفْتَدِي إِذَا كَانَتِ الشَّمْسُ وَالْمَطَرُ يُضِرَّانِ بِهِ قَالَ نَعَمْ قُلْتُ كَمِ الْفِدَاءُ قَالَ شَاةٌ.
9. Ahmad ibn Muhammad from has narrated from Ibrahim ibn abu Mahmud who has said the following: “I once asked abu al-Hassan , about a man who is in the state of Ihram: if he can use shadow and pay ransom if the sun and rain are harmful for him. He (the Imam) said, ‘Yes, he can do so.’ I asked, ‘How much is the ransom?’ He (the Imam) said, ‘It is one sheep.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).