Hawzah News Agency – The merciful prophet of Islam (pbuh) says:

مَن عَيَّرَ أخاهُ بِذَنبٍ قَد تابَ مِنهُ لَم يَمُتْ حَتّى‏ يَعمَلَهُ.

 ‘The one who condemns a fellow brother for a sin that he has already repented for will not die before committing it himself.’

Source: al-Kafi, v. 2, p. 356, no. 2