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. (Using translation from Abū Dāʾūd 2126)   

عَنْ رَجُلٍ مِنْ أَصْحَابِ النَّبِيِّ ﷺ أَنَّ عَلِيًّا لَمَّا تَزَوَّجَ فَاطِمَةَ بِنْتَ رَسُولِ اللهِ ﷺ أَرَادَ أَنْ يَدْخُلَ بِهَا فَمَنَعَهُ رَسُولُ اللهِ ﷺ حَتَّى يُعْطِيَهَا شَيْئًا فَقَالَ يَا رَسُولَ اللهِ لَيْسَ لِي شَيْءٌ فَقَالَ لَهُ النَّبِيُّ ﷺ أَعْطِهَا دِرْعَكَ فَأَعْطَاهَا دِرْعَهُ ثُمَّ دَخَلَ بِهَا قَالَ وَحَدَّثَنَا كَثِيرٌ ثنا أَبُو حَيْوَةَ عَنْ شُعَيْبٍ عَنْ غَيْلَانَ عَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ مِثْلَهُ