Abu Zuhayr ‘Umārah ibn Ru’aybah (may Allah be pleased with him) reported: The Messenger of Allah (may Allah's peace and blessings be upon him) said: "He who prays before sunrise and before sunset will not enter Hellfire."
The Messenger of Allah (may Allah's peace and blessings be upon him) informs that one who regularly offers the Fajr and ‘Asr prayers will not enter Hellfire. He mentioned these two prayers in particular given that they are the most difficult of all prayers because the morning prayer is at the time when one is enjoying deep sleep, and the ‘Asr prayer is at the time when one is preoccupied with daytime chores and trade, and whoever regularly observes these two prayers despite the hardship will regularly observe the rest of the prayers.