It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever has not said Bismillah, his ablution has not taken place, and whoever has not performed ablution, his prayer has not taken place."
(b) This hadith is known from Yahya bin Abi Kathir from Abu Salamah only through this chain.
(c) Ayyub bin al-Najjar used to say: I heard only one hadith from Yahya bin Abi Kathir, namely the account of the meeting of Adam (peace be upon him) and Musa (peace be upon him). Yahya bin Ma'in mentioned this.
(d) So this narration of his is munqati' (has a broken chain).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 196