"The Messenger of Allah ﷺforbade praying after 'Asr unless the sun was still white, clear and high." (Using translation from Nasāʾī 573)  

«نَهَى رَسُولُ اللهِ ﷺ عَنْ صَلَاةٍ بَعْدَ الْعَصْرِ إِلَّا أَنْ تَكُونَ الشَّمْسُ بَيْضَاءَ مُرْتَفِعَةً»  

Two are the prayers which the Messenger of Allah ﷺ always observed in my house-openly or secretly-two rak'ahs before the dawn and two rak'ahs after the 'Asr. (Using translation from Muslim 835c)  

«صَلَاتَانِ مَا تَرَكَهُمَا رَسُولُ اللهِ ﷺ فِي بَيْتِي سِرًّا وَلَا عَلَانِيَةً رَكْعَتَانِ قَبْلَ الْفَجْرِ وَرَكْعَتَانِ بَعْدَ الْعَصْرِ»