[Machine] The Messenger of Allah ﷺ said, "Whoever does not mention the name of Allah upon performing ablution, their ablution is invalid. And whoever does not perform ablution, their prayer is invalid." This hadith is known only from the narration of Yahya ibn Abi Kathir from Abu Salamah from this aspect. And Ayyub ibn al-Najjar used to say, "I have only heard one hadith from Yahya ibn Abi Kathir, which is the hadith about Adam and Moses meeting, which Yahya ibn Ma'in mentioned in his book.  

قَالَ رَسُولُ اللهِ ﷺ مَا تَوَضَّأَ مَنْ لَمْ يَذْكُرِ اسْمَ اللهِ عَلَيْهِ وَمَا صَلَّى مَنْ لَمْ يَتَوَضَّأْ وَهَذَا الْحَدِيثُ لَا يُعْرَفُ مِنْ حَدِيثِ يَحْيَى بْنِ أَبِي كَثِيرٍ عَنْ أَبِي سَلَمَةَ إِلَّا مِنْ هَذَا الْوَجْهِ وَكَانَ أَيُّوبُ بْنُ النَّجَّارِ يَقُولُ لَمْ أَسْمَعْ مِنْ يَحْيَى بْنِ أَبِي كَثِيرٍ إِلَّا حَدِيثًا وَاحِدًا وَهُوَ حَدِيثُ التَّقَى آدَمُ وَمُوسَى ذَكَرَهُ يَحْيَى بْنُ مَعِينٍ فِيمَا