Muwatta Malik · Hadith 774

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَقُولُ لاَ يَنْكِحِ الْمُحْرِمُ وَلاَ

Yahya related to me from Malik, from Nafi, that Abdullah ibn Umar used to say, "Someone in ihram may neither get married, nor arrange a marriage for himself or others

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).