Mentioning the differences in the reports from Muhammad bin Abi Yaqub in the Hadith of Abi Umamah About The Virtue Of Fasting
أَخْبَرَنِي زَكَرِيَّا بْنُ يَحْيَى، قَالَ حَدَّثَنَا أَبُو مُصْعَبٍ، عَنِ الْمُغِيرَةِ، عَنْ عَبْدِ اللَّهِ بْنِ سَعِيدِ بْنِ أَبِي هِنْدٍ، عَنْ مُحَمَّدِ بْنِ إِسْحَاقَ، عَنْ سَعِيدِ بْنِ أَبِي هِنْدٍ، قَالَ دَخَلَ مُطَرِّفٌ عَلَى عُثْمَانَ نَحْوَهُ مُرْسَلٌ .
It was narrated that Saeed bin Abi Hind said: "Mutarrif entered upon 'Uthman" and he narrated something similar in Mursal from. Abu Hurairah said: "The Messenger of Allah (ﷺ) said: 'Fasting is a shield."' (Sahih