Allah's Apostle ﷺ forbade me to recite the Qur'an while I am in ruku; and the wearing of gold and clothes dyed in saffron. (Using translation from Muslim 2078b)
أَنَّهُ سَمِعَ عَلِيَّ بْنَ أَبِي طَالِبٍ ؓ يَقُولُ نَهَانِي النَّبِيُّ ﷺ عَنِ الْقِرَاءَةِ وَأَنَا رَاكِعٌ وَعَنْ لُبْسِ الذَّهَبِ وَالْمُعَصْفَرِ