Mishkat al-Masabih
Mishkat al-Masabih 125
عَن الْبَرَاءِ بْنِ عَازِبٍ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: " الْمُسْلِمُ إِذَا سُئِلَ فِي الْقَبْرِ يَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللَّهُ وَأَنَّ مُحَمَّدًا رَسُولُ اللَّهِ فَذَلِكَ قَوْلُهُ (يُثَبِّتُ اللَّهُ الَّذِينَ آمَنُوا بِالْقَوْلِ الثَّابِتِ فِي الْحَيَاةِ الدُّنْيَا وَفِي الْآخِرَة) وَفِي رِوَايَةٍ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: (يُثَبِّتُ اللَّهُ الَّذِينَ آمَنُوا بِالْقَوْلِ الثَّابِت) نَزَلَتْ فِي عَذَابِ الْقَبْرِ يُقَالُ لَهُ: مَنْ رَبك؟ فَيَقُول: رَبِّي الله ونبيي مُحَمَّد
Al-Barāʾ ibn ʿĀzib reported that the Messenger of God said: ‘When a Muslim is questioned in the grave, he testifies that there is no god but God and that Muhammad is the Messenger of God.’ That is the meaning of His saying: ‘God makes firm those who believe with the firm word in the life of this world and in the Hereafter.’ In another narration from the Prophet, he said: ‘God makes firm those who believe with the firm word.’ It was revealed concerning the punishment of the grave. He is asked, ‘Who is your Lord?’ and replies, ‘My Lord is God, and my Prophet is Muhammad.’