The Sufficient (Vol 4) · Hadith 1254 (#Ḥadīth #4)
Chapter 89 | The Case of One Who Covers His Head in the State of al-’Ihram, or His Face Intentionally or Due to Forgetfulness
4ـ أَبُو عَلِيٍّ الأَشْعَرِيُّ عَنْ مُحَمَّدِ بْنِ عَبْدِ الْجَبَّارِ عَنْ صَفْوَانَ عَنْ عَبْدِ الرَّحْمَنِ قَالَ سَأَلْتُ أَبَا الْحَسَنِ (عَلَيْهِ السَّلاَم) عَنِ الْمُحْرِمِ يَجِدُ الْبَرْدَ فِي أُذُنَيْهِ يُغَطِّيهِمَا قَالَ لا.
4. Abu Ali al-Ash’ariy has narrated from Muhammad ibn ‘Abd al-Jabbar from Safwan from ‘Abd al-Rahman who has said the following: “I once asked abu al-Hassan , about a man who because of cold covers his ears while in the state of Ihram. He (the Imam) said, ‘No, he must not do so.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).