عَنْ تَمِيمِ الدَّارِيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ الدِّينُ النَّصِيحَةُ الدِّينُ النَّصِيحَةُ ثَلَاثًا وَفِي رِوَايَةٍ إِنَّمَا الدِّينُ النَّصِيحَةُ قَالُوا لِمَنْ يَا رَسُولَ اللَّهِ قَالَ لِلَّهِ وَلِكِتَابِهِ وَلِرَسُولِهِ وَلِأَئِمَّةِ الْمُسْلِمِينَ وَعَامَّتِهِمْ
It is narrated from Sayyiduna Tamim Dari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Religion is sincerity, religion is sincerity. He said it three times. In another narration, it is: Religion is nothing but sincerity. The people asked: O Messenger of Allah! For whom? He (peace and blessings be upon him) said: For Allah Almighty, His Book, His Messenger, the leaders of the Muslims, and the common Muslims.