ما هو شرح حديث: "إذا قلت لصاحبك أنصت، والإمام يخطب؛ فقد لغوت"؟

The aforementioned Hadith is authentic and prohibits speaking during the Friday sermon, making listening to the preacher obligatory. The meaning of "laghawta" (you have babbled/spoken idly) is that the speaker has uttered what is inappropriate or incorrect. The majority of scholars have agreed on the obligation to listen to the sermon, whether one hears the Imam or not, and that this obligation applies during the sermon itself.