Al-Kāfi

Hadith 1253
ihram
3ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ حَمَّادٍ عَنِ الْحَلَبِيِّ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) قَالَ سَأَلْتُهُ عَنِ الْمُحْرِمِ يَنَامُ عَلَى وَجْهِهِ عَلَى زَامِلَتِهِ قَالَ لا بَأْسَ بِهِ.
3. Ali ibn Ibrahim has narrated from his father from ibn abu ‘ Urn ay r from Hammad from al-Halabiy who has said the following: “I once asked abu ‘Abd Allah (a.s.), about a man who in the state of Ihram sleeps with a Zamilah (wrapping) on his face. He (the Imam) said, ‘It is not harmful.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī