Mentioning the differences in the reports from Muhammad bin Abi Yaqub in the Hadith of Abi Umamah About The Virtue Of Fasting
أَخْبَرَنَا الرَّبِيعُ بْنُ سُلَيْمَانَ، قَالَ أَنْبَأَنَا ابْنُ وَهْبٍ، قَالَ أَخْبَرَنِي جَرِيرُ بْنُ حَازِمٍ، أَنَّ مُحَمَّدَ بْنَ عَبْدِ اللَّهِ بْنِ أَبِي يَعْقُوبَ الضَّبِّيَّ، حَدَّثَهُ عَنْ رَجَاءِ بْنِ حَيْوَةَ، قَالَ حَدَّثَنَا أَبُو أُمَامَةَ الْبَاهِلِيُّ، قَالَ قُلْتُ يَا رَسُولَ اللَّهِ مُرْنِي بِأَمْرٍ يَنْفَعُنِي اللَّهُ بِهِ . قَالَ " عَلَيْكَ بِالصِّيَامِ فَإِنَّهُ لاَ مِثْلَ لَهُ " .
It was narrated that Raja bin Haiwah said: "Abu Umamah Al-Bahili narrated to me: 'I said: O Messenger of Allah, tell me of something by which Allah will benefic me. He said: Take to fasting, for there is nothing like it."'