It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him), from Sayyiduna Abu Ubaydah bin al-Jarrah (may Allah be pleased with him), that he said: The Messenger of Allah (peace and blessings be upon him) said: "Among the prayers there is no prayer more excellent than the Fajr prayer performed in congregation on Friday, and I think that whoever of you attends it will be one who is forgiven."
This hadith is not narrated from Sayyiduna Abu Ubaydah (may Allah be pleased with him) except with this chain, and Yahya bin Ayyub is alone in narrating it.
Hadith Referenceالمعجم الأوسط / باب الألف / 184
Hadith Takhrij«أخرجه البزار فى «مسنده» برقم: 1279، والطبراني فى «الكبير» برقم: 366»