وَوَقْتُ الْعَصْرِ مِنِ ابْتِدَاءِ الزِّيَادَةِ عَلَى الْمِثْلِ أَوِ الْمِثْلَيْنِ إِلَى غُرُوبِ الشَّمْسِ
Asr begins after the relevant shadow boundary and lasts until sunset. Delaying it without excuse until the sun loses its normal brilliance and becomes yellow is Makruh Tahrimi, even though the current day's Asr remains valid before actual sunset.
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Prayer Obligation and the Five Daily Prayer Times
وَوَقْتُ الْعَصْرِ مِنِ ابْتِدَاءِ الزِّيَادَةِ عَلَى الْمِثْلِ أَوِ الْمِثْلَيْنِ إِلَى غُرُوبِ الشَّمْسِ
Asr begins after the relevant shadow boundary and lasts until sunset. Delaying it without excuse until the sun loses its normal brilliance and becomes yellow is Makruh Tahrimi, even though the current day's Asr remains valid before actual sunset.