‏الصيام : Hadeeth No:2520 Ibn'Abbas (Allaah be pleased with both of them) reported that the Messenger of Allaah (sallAllaahu alayhi wa sallam) arrived in Medina and found the Jews observing fast on the day of 'Ashura. The Messenger of Allaah (sallAllaahu alayhi wa sallam) said to them: What is the (significance) of this day ...

‏فضائل الصحابة‏ : Hadeeth No:5947 Anas reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: For every Umma there is a man of trust and the man of trust of this Umma is Abu 'Ubaida b. Jarrah....