Hadith 8:122
Abu Bakr narrated to us, he said: Abu Dawud narrated to us, from Hammad ibn Salamah, from Hammad, he said: The muhrim (a person in the state of ihram) may remove his nail.
حدثنا أبو بكر قال ثنا أبو داود عن حماد بن سلمة عن حماد قال ينزع المحرم ظفره