Al-Kāfi - The Book of Haj

Chapter: The Case of Drawing Blood, Cutting Nails or Hair while in the Sate of al-’ Ihram ِنْ أَصْحَابِنَا عَنْ أَحْ٠َّدٍ وَسَهْلِ بْنِ زِيَادٍ جَ٠ِيعاً عَنِ ابْنِ ٠َحْبُوبٍ عَنِ ابْنِ رِئَابٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ السَّلاَ٠َنْ حَلَقَ رَأْسَهُ أَوْ نَتَفَ إِبْطَهُ نَاسِياً أَوْ سَاهِياً أَوْ جَاهِلاً فَلا شَيْ‏ءَ عَلَيْهِ وَ٠ِّداً فَعَلَيْهِ دَ٠8.

A number of our people have narrated from Ahmad ibn Muhammad from and Sahl ibn Ziyad all from ibn Mahbub from ibn Ri’ab from Zurarah who has said the following: “Abu Ja‘far (a.s.), has said, ‘Whoever in the state of Ihram pulls out hairs of his underarms or shaves his head because of forgetfulness or ignorance, there is nothing on him; but if one does so knowingly, he must pay one animal as offering to be slaughtered.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (7/322))