Narrated Abu Huraira: Allah's Apostle (p.b.u.h) said, "When the Imam is delivering the Khutba, and you ask your companion to keep quiet and listen, then no doubt you have done an evil act."
Hadith ReferenceSahih Bukhari / The Book of Al-Jumuah (Friday) / Hadith: 934
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة