Some righteous men, including ‘Umar - and the most righteous of them in my view was 'Umar - confirmed when I was present that the Messenger of Allah ﷺ said: ʿThere is no prayer after Fajr until the sun rises and there is no prayer after 'Asr until the sun sets.ʿ
شَهِدَ عِنْدِي رِجَالٌ مَرْضِيُّونَ فِيهِمْ عُمَرُ وَأَرْضَاهُمْ عِنْدِي عُمَرُ أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَا صَلاةَ بَعْدَ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ وَلا صَلاةَ بَعْدَ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ