اُولٰۤىِٕكَ الَّذِيْنَ يَعْلَمُ اللّٰهُ مَا فِيْ قُلُوْبِهِمْ فَاَعْرِضْ عَنْهُمْ وَعِظْهُمْ وَقُلْ لَّهُمْ فِيْٓ اَنْفُسِهِمْ قَوْلًا ۢ بَلِيْغًا ( النساء: ٦٣ )
Ulaaa'ikal lazeena ya'la mullaahu maa fee quloobihim fa a'rid 'anhum wa 'izhum wa qul lahum feee anfusihim qawlam baleeghaa (an-Nisāʾ 4:63)
Those are the ones of whom Allah knows what is in their hearts, so turn away from them but admonish them and speak to them a far-reaching [i.e., effective] word. (An-Nisa  : 63)
1 Mufti Taqi Usmani
Those are the ones Allah knows what is in their hearts. So, ignore them, and give them good counsel, and speak to them about themselves in appealing words.