‏الصلاة : Hadeeth No:743 A'isha reported: Ibn Umm Maktum used to pronounce Adhan at the behest of the Messenger of Allaah (sallAllaahu alayhi wa sallam) (despite the fact) that he was blind....

‏الحج : Hadeeth No:2961 A hadith like this has been narrated by 'Abd al-Rahman b. al-Qasim with the same chain of transmitters....