[Machine] Abu Dhar and Nuaim ibn Amr ibn Abu Dhar and I set out together in search of the Messenger of Allah ﷺ who was in the valley (of Mecca). Abu Dhar said to him: O Messenger of Allah, we have come to listen to what you say and to respond to your call. Upon hearing this, the Messenger of Allah ﷺ said: "I bear witness that there is no deity worthy of worship except Allah, and I am the Messenger of Allah." Abu Dhar and his companion believed in him and I too believed in him. Ali (may Allah be pleased with him) was in need of the Messenger of Allah ﷺ so he sent him (to the valley). On that day, the revelation was sent down to the Messenger of Allah ﷺ and Ali prayed on Tuesday. This is an authentic narration and it has not been narrated by anyone else.  

انْطَلَقَ أَبُو ذَرٍّ وَنُعَيْمُ ابْنُ عَمِّ أَبِي ذَرٍّ وَأَنَا مَعَهُمْ نَطْلُبُ رَسُولَ اللَّهِ ﷺ وَهُوَ بِالْجَبَلِ مُكْتَتِمٌ فَقَالَ أَبُو ذَرٍّ يَا مُحَمَّدُ آتَيْنَاكَ نَسْمَعُ مَا تَقُولُ وَإِلَى مَا تَدْعُو فَقَالَ رَسُولُ اللَّهِ ﷺ «أَقُولُ لَا إِلَهَ إِلَّا اللَّهُ وَإِنِّي رَسُولُ اللَّهِ» فَآمَنَ بِهِ أَبُو ذَرٍّ وَصَاحِبُهُ وَآمَنْتُ بِهِ وَكَانَ عَلِيٌّ فِي حَاجَةٍ لِرَسُولِ اللَّهِ ﷺ أَرْسَلَهُ فِيهَا وَأُوحِيَ إِلَى رَسُولِ اللَّهِ ﷺ يَوْمَ الِاثْنَيْنِ وَصَلَّى عَلِيٌّ يَوْمَ الثُّلَاثَاءِ «صَحِيحُ الْإِسْنَادِ وَلَمْ يُخَرِّجَاهُ» صحيح