Muhammad ibn Abdur Rahman ibn Thawban reported on the authority of a man from the Companions of the Prophet ﷺ:

When Ali married Fatimah, daughter of the Messenger of Allah ﷺ, he intended to have intercourse with her. The Messenger of Allah ﷺ prohibited him to do so until he gave her something. Ali said: I have nothing with me, Messenger of Allah. The Prophet ﷺ said: Give her your coat of mail. So he gave her his coat of mail, and then cohabited with her.

حَدَّثَنَا كَثِيرُ بْنُ عُبَيْدٍ الْحِمْصِيُّ، حَدَّثَنَا أَبُو حَيْوَةَ، عَنْ شُعَيْبٍ، - يَعْنِي ابْنَ أَبِي حَمْزَةَ - حَدَّثَنِي غَيْلاَنُ بْنُ أَنَسٍ، حَدَّثَنِي مُحَمَّدُ بْنُ عَبْدِ الرَّحْمَنِ بْنِ ثَوْبَانَ، عَنْ رَجُلٍ، مِنْ أَصْحَابِ النَّبِيِّ ﷺ أَنَّ عَلِيًّا عَلَيْهِ السَّلاَمُ لَمَّا تَزَوَّجَ فَاطِمَةَ بِنْتَ رَسُولِ اللَّهِ ﷺ وَرَضِيَ اللَّهُ عَنْهَا أَرَادَ أَنْ يَدْخُلَ بِهَا فَمَنَعَهُ رَسُولُ اللَّهِ ﷺ حَتَّى يُعْطِيَهَا شَيْئًا فَقَالَ يَا رَسُولَ اللَّهِ لَيْسَ لِي شَىْءٌ . فَقَالَ لَهُ النَّبِيُّ ﷺ " أَعْطِهَا دِرْعَكَ " . فَأَعْطَاهَا دِرْعَهُ ثُمَّ دَخَلَ بِهَا .