Sahih Muslim
Sahih Muslim 1427 e
The Dowry. It is permissible for the dowry to be teaching Quran, a ring of iron or anything else, a small or large amount, And it is recommended for it to be Five Hundred Dirham
Arabic hadith text
وَحَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، وَمُحَمَّدُ بْنُ قُدَامَةَ، قَالاَ أَخْبَرَنَا النَّضْرُ بْنُ شُمَيْلٍ، حَدَّثَنَا شُعْبَةُ، حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ صُهَيْبٍ، قَالَ سَمِعْتُ أَنَسًا، يَقُولُ قَالَ عَبْدُ الرَّحْمَنِ بْنُ عَوْفٍ رَآنِي رَسُولُ اللَّهِ صلى الله عليه وسلم وَعَلَىَّ بَشَاشَةُ الْعُرْسِ فَقُلْتُ تَزَوَّجْتُ امْرَأَةً مِنَ الأَنْصَارِ . فَقَالَ "كَمْ أَصْدَقْتَهَا " . فَقُلْتُ نَوَاةً. وَفِي حَدِيثِ إِسْحَاقَ مِنْ ذَهَبٍ
Translation
Abd al-Rahman b. 'Auf (Allah be pleased with him) reported that Allah's Messenger (ﷺ) saw the signs of the happiness of wedding in me, and I said
I have married a woman of the Ansar. He said: How much Mahr have you paid? I said: For a date-stone weight of gold. And in the hadith transmitted by Ishaq (it is): (nawat weight) of gold.