Hadithcore
Sunan an-Nasa'i, 4204
sahih· Darussalam

It was narrated that Al-Qasim bin Muhammad said:

" I heard my paternal aunt say: 'The Messenger of Allah said; "Whoever among you is appointed to a position of authority. If Allah wills good for him. He will give him a righteous minister who will remind him if he forgets and help him if he remembers

أَخْبَرَنَا عَمْرُو بْنُ عُثْمَانَ، قَالَ حَدَّثَنَا بَقِيَّةُ، قَالَ حَدَّثَنَا ابْنُ الْمُبَارَكِ، عَنِ ابْنِ أَبِي حُسَيْنٍ، عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ، قَالَ سَمِعْتُ عَمَّتِي، تَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏

‏ مَنْ وَلِيَ مِنْكُمْ عَمَلاً فَأَرَادَ اللَّهُ بِهِ خَيْرًا جَعَلَ لَهُ وَزِيرًا صَالِحًا إِنْ نَسِيَ ذَكَّرَهُ وَإِنْ ذَكَرَ أَعَانَهُ ‏

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References2 variants
In-Book Reference
Book 39, Hadith 56
English Reference
Vol. 5, Book 39, Hadith 4209