From Sahih Muslim (Hadith 291):
It is reported on the authority of Hammam b, al-Harith that a man used to carry tales to the governor. We were sitting in the mosque. the people said:He is one who carries tales to the governor. He (the narrator) said: Then he came and sat with us. Thereupon Hudhaifa remarked: I heard the Messenger of Allah (ﷺ) saying: The beater of false tales would never enter heaven
Reference: Muslim 291