"I heard more than one of the Companions of the Prophet ﷺ - including 'Umar who was one of the dearest of them to me - that the Messenger of Allah ﷺ forbade praying after Fajr until the sun had risen, and praying after 'Asr until the sun had set." (Using translation from Nasāʾī 562)   

سَمِعْتُ غَيْرَ وَاحِدٍ مِنْ أَصْحَابِ النَّبِيِّ ﷺ مِنْهُمْ عُمَرُ وَكَانَ مِنْ أَحَبِّهُمْ إِلَيَّ أَنَّ رَسُولَ اللهِ ﷺ «نَهَى عَنِ الصَّلَاةِ بَعْدَ الْفَجْرِ حَتَّى تَطْلُعَ الشَّمْسُ وَعَنِ الصَّلَاةِ بَعْدَ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ» قَالَ أَبُو عَبْدِ الرَّحْمَنِ خَالَفَهُ طَاوُسٌ فَرَوَاهُ عَنِ ابْنِ عَبَّاسٍ وَلَمْ يَذْكُرْ عُمَرَ  

It was narrated from Ibn 'Abbas that the Prophet ﷺ forbade praying after 'Asr. (Using translation from Nasāʾī 569)  

أَنَّ النَّبِيَّ ﷺ «نَهَى عَنِ الصَّلَاةِ بَعْدَ الْعَصْرِ»  

'A'isha reported that 'Umar misconstrued the fact that the Messenger of Allah ﷺ had prohibited the observance of prayer at the time of the rising sun and at the time of its setting. (Using translation from Muslim 833a)   

عَائِشَةُ أَوْهَمَ عُمَرُ إِنَّمَا «نَهَى رَسُولُ اللهِ ﷺ أَنْ يَتَحَرَّى طُلُوعَ الشَّمْسِ أَوْ غُرُوبِهَا»  

'Are you not going to pray?' He said: 'The Messenger of Allah ﷺ said: 'There is no prayer after 'Asr until the sun has set, nor after Subh until the sun has risen.'" (Using translation from Nasāʾī 518)  

إِنَّ رَسُولَ اللهِ ﷺ قَالَ «لَا صَلَاةَ بَعْدَ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ وَلَا بَعْدَ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ»