صحيح ابن خزيمه
Sahih Ibn Khuzaymah
Chapter 26
(398) بَابُ النَّاسِي لِلصَّلَاةِ وَالنَّائِمِ عَنْهَا يُدْرِكُ رَكْعَةً مِنْهَا قَبْلَ ذَهَابِ وَقْتِهَا
398 Chapter: One Who Forgets or Sleeps through a Prayer and Catches a Unit before the Time Ends.
1 hadith
Hadith 984
Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he (peace be upon him) said: Whoever catches two rak‘ahs of ‘Asr prayer before the sun sets, or catches one rak‘ah before the sun rises, then he has caught the prayer — (therefore, he should complete the rest of the prayer).