´It was narrated from Abu Hurairah that the Prophet (ﷺ) said:` “If you say to your companions: ‘Be quiet’ on a Friday while the Imam is delivering the sermon, you have engaged in Laghw (idle talk or behaviour).”
Hadith ReferenceSunan Ibn Majah / Establishing the Prayer and the Sunnah Regarding Them / Hadith: 1110
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:بخاري ومسلم