EXALT ALLAH AND SUPPLICATE FOR THE PROPHET, praise and peace be upon him H 847 "A gathering in which there is no mention of Allah, the Exalted, and no supplication for the blessings on their Prophet will be afflicted with remorse. If Allah wills He might punish them and if He wills He might forgive them." R 847 Tirmidhi with a chain up to Abu Hurairah who related that the Prophet, praise and peace be upon him, said this.
835- وعنه ، عن النبيِّ صلى الله عليه وآله وسلم ، قَالَ : "مَا جَلَسَ قَوْمٌ مَجْلِساً لَمْ يَذْكُرُوا الله تَعَالَى فِيهِ ، وَلَمْ يُصَلُّوا عَلَى نَبِيِّهِمْ فِيهِ ، إِلاَّ كَانَ عَلَيْهِمْ تِرَةٌ ؛ فَإنْ شَاءَ عَذَّبَهُمْ ، وَإنْ شَاءَ غَفَرَ لَهُمْ" رواه الترمذي ، وقال : "حديث حسن" .