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abudawud:4783And Hb b. Baqiyyah > Khālid > Dāwud > Bakr

The Prophet ﷺ sent Muʿadh for some of his work. He then transmitted the rest of the tradition mentioned above. Abu Dawud said: This tradition is sounder of the two traditions.  

أبو داود:٤٧٨٣حَدَّثَنَا وَهْبُ بْنُ بَقِيَّةَ عَنْ خَالِدٍ عَنْ دَاوُدَ عَنْ بَكْرٍ

أَنَّ النَّبِيَّ ﷺ بَعَثَ أَبَا ذَرٍّ بِهَذَا الْحَدِيثِ  

قَالَ أَبُو دَاوُدَ وَهَذَا أَصَحُّ الْحَدِيثَيْنِ