question #1 Sahih al-Bukhari 617, Book 10, Hadith 15 : What is the significance of the timing of Suhur in relation to the Adhan?

My father said that Allah s Apostle 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.”