Muwatta Malik, Book 20, Hadith 776 (In-Book)

Yahya related to me from Malik, from Da'ud ibn al-Husayn, that Abu Ghatafan ibn Tarif al-Murri told him that his father Tarif had married a woman while he was in ihram, and Umar ibn al-Khattab had rescinded the marriage.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ دَاوُدَ بْنِ الْحُصَيْنِ، أَنَّ أَبَا غَطَفَانَ بْنَ طَرِيفٍ الْمُرِّيَّ، أَخْبَرَهُ أَنَّ أَبَاهُ طَرِيفًا تَزَوَّجَ امْرَأَةً وَهُوَ مُحْرِمٌ فَرَدَّ عُمَرُ بْنُ الْخَطَّابِ نِكَاحَهُ ‏.‏

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also referenced under: Book 20, Hadith 72 (USC-MSA)