Narrated Ibn 'Umar (RA):

Allah's Messenger (ﷺ) said: "May Allah mercy on a person who prays four Rak'at before the 'Asr prayer. " [Reported by Ahmad, Abu Da'ud and at-Tirmidhi and the latter graded it Hasan (good). Also reported by Ibn Khuzaimah who graded it Sahih (authentic)].

وَعَنْ اِبْنِ عُمَرَ ‏-رَضِيَ اَللَّهُ عَنْهُمَا‏- قَالَ : قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-{ رَحِمَ اَللَّهُ اِمْرَأً صَلَّى أَرْبَعًا قَبْلَ اَلْعَصْرِ } رَوَاهُ أَحْمَدُ , وَأَبُو دَاوُدَ وَاَلتِّرْمِذِيُّ وَحَسَّنَهُ , وَابْنُ خُزَيْمَةَ وَصَحَّحَهُ .‏ [1]‏