‏الصيام : Hadeeth No:2410 Samura b. Jundub addressed and narrated from the Prophet of Allaah (sallAllaahu alayhi wa sallam) having said (these words): Neither the call of Bilal should mislead you nor this whiteness (of false dawn) till (the true) dawn appears (or he said) till the dawn breaks....

‏الصيام : Hadeeth No:2640 'A'isha (Allaah be pleased with her) reported that the Messenger of Allaah (may peace he upon him) used to observe i'tikif in the last ten days of Ramadan till Allaah called him back (to his heavenly home). Then his wives observed i'tikaf after him....