Imām Bukhārī narrates: Abū Nu'aim narrated to us, he said: Shaibān narrated to us, from Yahyā, from Abī Salamah, from Abū Hurairah, may Allāh be pleased with him, he narrates that the Messenger of Allāh ﷺ said:

When any one of you catches one sajdah of the 'Asr prayer before the setting of the sun, he should complete his prayer, and when any one of you catches one sajdah of the Fajr prayer before the rising of the sun, he should complete his prayer.