‏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....

‏الصلاة : Hadeeth No:1591 'A'isha reported: The Messenger of Allaah (sallAllaahu alayhi wa sallam) used to recite in sitting position (while observing the Tahajjud prayer) and when he intended to bow, he would stand up and recite (for the duration in which) a man (ordinarily) recites forty verses....