Narrated Sahl bin Sa`d:While we were sitting in the company of the Prophet (ﷺ) a woman came to him and presented herself (for marriage) to him. The Prophet (ﷺ) looked at her, lowering his eyes and raising them, but did not give a reply. One of his companions said, "Marry her to me O Allah's Messenger (ﷺ)!" The Prophet (ﷺ) asked (him), "Have you got anything?" He said, "I have got nothing." The Prophet (ﷺ) said, "Not even an iron ring?" He Sa`d, "Not even an iron ring, but I will tear my garment into two halves and give her one half and keep the other half." The Prophet; said, "No. Do you know some of the Qur'an (by heart)?" He said, "Yes." The Prophet (ﷺ) said, "Go, I have agreed to marry her to you with what you know of the Qur'an (as her Mahr)."
حَدَّثَنَا أَحْمَدُ بْنُ الْمِقْدَامِ، حَدَّثَنَا فُضَيْلُ بْنُ سُلَيْمَانَ، حَدَّثَنَا أَبُو حَازِمٍ، حَدَّثَنَا سَهْلُ بْنُ سَعْدٍ، كُنَّا عِنْدَ النَّبِيِّ صلى الله عليه وسلم جُلُوسًا فَجَاءَتْهُ امْرَأَةٌ تَعْرِضُ نَفْسَهَا عَلَيْهِ فَخَفَّضَ فِيهَا النَّظَرَ وَرَفَعَهُ فَلَمْ يُرِدْهَا، فَقَالَ رَجُلٌ مِنْ أَصْحَابِهِ زَوِّجْنِيهَا يَا رَسُولَ اللَّهِ. قَالَ " أَعِنْدَكَ مِنْ شَىْءٍ ". قَالَ مَا عِنْدِي مِنْ شَىْءٍ. قَالَ " وَلاَ خَاتَمًا مِنْ حَدِيدٍ ". قَالَ وَلاَ خَاتَمًا مِنَ حَدِيدٍ وَلَكِنْ أَشُقُّ بُرْدَتِي هَذِهِ فَأُعْطِيهَا النِّصْفَ، وَآخُذُ النِّصْفَ. قَالَ " لاَ، هَلْ مَعَكَ مِنَ الْقُرْآنِ شَىْءٌ ". قَالَ نَعَمْ. قَالَ " اذْهَبْ فَقَدْ زَوَّجْتُكَهَا بِمَا مَعَكَ مِنَ الْقُرْآنِ ".
Bukhari
Wedlock, Marriage (Nikaah) • Hadith 68