وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ أَبِي الزُّبَيْرِ الْمَكِّيِّ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ، أُتِيَ بِنِكَاحٍ لَمْ يَشْهَدْ عَلَيْهِ إِلاَّ رَجُلٌ وَامْرَأَةٌ فَقَالَ هَذَا نِكَاحُ السِّرِّ وَلاَ أُجِيزُهُ وَلَوْ كُنْتُ تَقَدَّمْتُ فِيهِ لَرَجَمْتُ ‏.‏

Yahya related to me from Malik from Abu'z-Zubayr al-Makki that a case was brought to Umar about a marriage which had only been witnessed by one man and one woman . He said, "This is a secret marriage and I do not permit it. Had I been the first to come upon it, I would have ordered them to be stoned