Mishkat al-Masabih 22 Clothing كتاب اللباس 84

وَعَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَخَذَ حَرِيرًا فَجَعَلَهُ فِي يَمِينِهِ وَأَخَذَ ذَهَبًا فَجَعَلَهُ فِي شِمَالِهِ ثُمَّ قَالَ: «إِنَّ هَذَيْنِ حَرَامٌ عَلَى ذُكُورِ أُمتي» . رَوَاهُ أَحْمد وَأَبُو دَاوُد وَالنَّسَائِيّ

‘Ali told that the Prophet, taking some silk and putting it in his right hand, and taking some gold and putting it in his left hand, said, “These are prohibited to the male members of my people.” Ahmad, Abu Dawud and Nasa’i transmitted it.