مُوَطَّأُ مَالِكٍ
Muwatta Malik 780
Hajj
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 Umar used to say, "Someone in ihram should not be cupped, except when there is no other alternative." Malik said, "Someone who is in ihram should not be cupped except when it is necessary."
Arabic/English book reference: Book 20, Hadith 76