The Adhan pronounced by a blind man (is permissible) when there is a person to inform him about the time of the Salat (prayer)

Narrated Abdullah ibn umar:

The Prophet (ﷺ) said, "Bilal pronounces 'Adhan at night, so keep on eating and drinking (Suhur) till Ibn Um Maktum pronounces Adhan." (Salim added), "He was a blind man who would not pronounce the Adhan unless he was told that the day had dawned."