Sunan Abu Dawud 1271
Prayer (Kitab Al-Salat): Voluntary Prayers
حَدَّثَنَا أَحْمَدُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا أَبُو دَاوُدَ، حَدَّثَنَا مُحَمَّدُ بْنُ مِهْرَانَ الْقُرَشِيُّ، حَدَّثَنِي جَدِّي أَبُو الْمُثَنَّى، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " رَحِمَ اللَّهُ امْرَأً صَلَّى قَبْلَ الْعَصْرِ أَرْبَعًا " .
Narrated Abdullah ibn Umar: The Prophet (ﷺ) said: May Allah show mercy to a man who prays four rak'ahs before the afternoon prayer
Grading: Al-Albani: Hasan · Muhammad Muhyi Al-Din Abdul Hamid: Hasan · Shuaib Al Arnaut: Hasan · Zubair Ali Zai: Isnaad Hasan
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.