Hudhaifah (May Allah be pleased with him) said:
The Messenger of Allah (ﷺ) said, "The person who goes about with calumnies will never enter Jannah."[Al-Bukhari and Muslim]. (DE)
App reference (DE): Book 18, Hadith 26 (DE)
Arabic/English book reference (DE): Book 18, Hadith 1536 (DE)