Jundub bin Sufyan (May Allah be pleased with him) reported:
The Messenger of Allah (ﷺ) said, "He who offers the dawn (Fajr) prayers will come under the Protection of Allah. O son of Adam! Beware, lest Allah should call you to account in any respect from (for withdrawing) His Protection."[Muslim].
App reference: Book 9, Hadith 59
Arabic/English book reference: Book 9, Hadith 1049