وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّهُ كَانَ يَقُولُ لاَ يَحْتَجِمُ الْمُحْرِمُ إِلاَّ مِمَّا لاَ بُدَّ لَهُ مِنْهُ ‏.‏ قَالَ مَالِكٌ لاَ يَحْتَجِمُ الْمُحْرِمُ إِلاَّ مِنْ ضَرُورَةٍ ‏.‏

Yahya related to me from Malik, from Nafi, that Abdullah ibn Umarused to say, "Someone in ihram should not be cupped, except when thereis no other alternative." Malik said, "Someone who is inihram should not be cupped except when it is necessary." Translation Not Available

Book Ref: Muwatta Imam Malik Book 20 Hadith 780
Web Ref:  Muwatta Imam Malik Book 20 Hadith 76