وَالَّذينَ يَرمونَ المُحصَناتِ ثُمَّ لَم يَأتوا بِأَربَعَةِ شُهَداءَ فَاجلِدوهُم ثَمانينَ جَلدَةً وَلا تَقبَلوا لَهُم شَهادَةً أَبَدًا ۚ وَأُولـٰئِكَ هُمُ الفاسِقونَ

Those who falsely accuse chaste women, yet fail to produce four witnesses, whip them with eighty lashes, and reject their testimony after that. These are the sinful ones.