931. hadíth
وَ قَالَ عَلَيْهِ اَلسَّلاَمُ: «لاَ يَأْخُذِ اَلْحَرَامُ مِنْ شَعْرِ اَلْحَلاَلِ ».
Imam (a.s) said: "A person in the state of ihram should not cut the hair of one who is not in the state of ihram."
Man Lā Yaḥḍuruh al-Faqīh
Shaykh Muḥammad b. ʿAlī al-Ṣaduq
Book of Pilgrimage and Its Virtues
Chapter on What is Permissible and Impermissible for the Muhrim to Do and Use of All Types
A fordítás angol nyelvű (Bab Ul Qaim Publications), forrás: Thaqalayn.net.