Al-Hujurat 49:3
إِنَّ ٱلَّذِينَ يَغُضُّونَ أَصْوَٰتَهُمْ عِندَ رَسُولِ ٱللَّهِ أُو۟لَـٰٓئِكَ ٱلَّذِينَ ٱمْتَحَنَ ٱللَّهُ قُلُوبَهُمْ لِلتَّقْوَىٰ ۚ لَهُم مَّغْفِرَةٌ وَأَجْرٌ عَظِيمٌ
Inna allatheena yaghuddoona aswatahumAAinda rasooli Allahi ola-ika allatheenaimtahana Allahu quloobahum littaqwalahum maghfiratun waajrun AAatheem
Indeed, those who lower their voices before the Messenger of Allāh - they are the ones whose hearts Allāh has tested for righteousness. For them is forgiveness and great reward.
Surely, those who lower their voices before Allah’s Messenger are the ones whose hearts Allah has tested for piety; for them there is forgiveness, and a great reward.