Al-Kāfi - Volume 4 > Disciplines to Maintain in the State of al-’Ihram
Hadith #10

10ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْعَمْرَكِيِّ بْنِ عَلِيٍّ عَنْ عَلِيِّ بْنِ جَعْفَرٍ عَنْ أَخِيهِ أَبِي الْحَسَنِ (عَلَيْهِ السَّلاَم) قَالَ سَأَلْتُهُ عَنِ الْمُحْرِمِ يُصَارِعُ هَلْ يَصْلُحُ لَهُ قَالَ لا يَصْلُحُ لَهُ مَخَافَةَ أَنْ يُصِيبَهُ جِرَاحٌ أَوْ يَقَعَ بَعْضُ شَعْرِهِ.

10. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-‘Amrakiy from Ali ibn Ja’far who has said the following: “I once asked abu al-Hassan, ‘Alayhi al-Salam, about a man who is in the state of Ihram; if he can fight a contest. He (the Imam) said, ‘No, because he may sustain injuries or his hair may fall.’”