(13) باب الصَّدَاقِ وَجَوَازِ كَوْنِهِ تَعْلِيمَ قُرْآنٍ وَخَاتَمَ حَدِيدٍ وَغَيْرَ ذَلِكَ مِنْ قَلِيلٍ وَكَثِيرٍ وَاسْتِحْبَابِ كَوْنِهِ خَمْسَمِائَةِ دِرْهَمٍ لِمَنْ لاَ يُجْحَفُ بِهِ
Anas b. Malik (Allah be pleased with him) reported that 'Abd al-Rahman b. 'Auf (Allah be pleased with him) married a woman for a date-stone's weight of gold and Allah's Apostle (ﷺ) said to him:
Hold a wedding feast, even if only with a sheep.
Reference: Sahih Muslim 1427 c
In-book reference: Book 16, Hadith 94
USC-MSA web (English) reference(deprecated numbering scheme): Book 8, Hadith 3321