(17) باب وَقْتِ السُّحُورِ
Addressing (the people) Samurah b. Jundub reported the Messenger of Allah (ﷺ) as saying:
The adhan (call to prayer) of Bilal should not prevent you from taking a meal shortly before dawn, not does the whiteness of horizon (before dawn) in this way (vertically) until it spreads out horizontally. (JA)
Reference (JA): Sunan Abi Dawud 2346 (JA)
In-book reference (JA): Book 14, Hadith 34 (JA)
English translation (JA): Book 13, Hadith 2339 (JA)