صَحِيحُ مُسْلِمٍ
Sahih Muslim 135 d
The Book of Faith
Clarifying the Waswasah (Whispers, Bad Thoughts) with regard to faith, and what the one who experiences that should say
حَدَّثَنِي مُحَمَّدُ بْنُ حَاتِمٍ، حَدَّثَنَا كَثِيرُ بْنُ هِشَامٍ، حَدَّثَنَا جَعْفَرُ بْنُ بُرْقَانَ، حَدَّثَنَا يَزِيدُ بْنُ الأَصَمِّ، قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم لَيَسْأَلَنَّكُمُ النَّاسُ عَنْ كُلِّ شَىْءٍ حَتَّى يَقُولُوا اللَّهُ خَلَقَ كُلَّ شَىْءٍ فَمَنْ خَلَقَهُ .
Yazid b. al-Asamm said: I heard Abu Huraira saying that the Messenger of Allah (ﷺ) observed: people will certainly ask you about everything till they will propound: Allah created every thing, but who created Allah?
Sahih Muslim, 135 dSahihصحيح