‏الصلاة : Hadeeth No:1886 Ja'far b. Muhammad said on the authority of his father: I heard Jabir b. 'Abdullah saying that in the sermon of the Prophet of Allaah (sallAllaahu alayhi wa sallam) he praised Allaah, lauded Him (and subsequently said [other words] and raised his voice, and the rest of the hadith is the same)....

‏الصلاة : Hadeeth No:739 Anas reported: Bilal was commanded (by the Prophet) to repeat the phrases twice in Adhan, and once in lqama....