Abdullah ibn Mas’ud said: Indeed, Muhammad, peace be upon him, said: “Shall I not make clear to you what calumny is? It is gossip (scandalous talk) between people.”
[Sahih Muslim, Book 32, Number 6306]
عَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ، قَالَ إِنَّ مُحَمَّدًا صلى الله عليه وسلم قَالَ أَلاَ أُنَبِّئُكُمْ مَا الْعَضْهُ هِيَ النَّمِيمَةُ الْقَالَةُ بَيْنَ النَّاسِ