No prayer is valid after the 'Asr prayer till the sun sets and no prayer is valid after the dawn prayer till the sun rises.  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ صَلاَةَ بَعْدَ صَلاَةِ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ وَلاَ صَلاَةَ بَعْدَ صَلاَةِ الْفَجْرِ حَتَّى تَطْلُعَ الشَّمْسُ  

Some reliable people testified before me, and among them was Umar ibn al-Khattab, and most reliable in my eyes was Umar: The Prophet of Allah ﷺ said: There is no prayer after the dawn prayer until the sun rises; and there is no prayer after the 'Asr prayer until the sun sets.  

أَنَّ نَبِيَّ اللَّهِ ﷺ قَالَ لاَ صَلاَةَ بَعْدَ صَلاَةِ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ وَلاَ صَلاَةَ بَعْدَ صَلاَةِ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ  

Yahya related to me from Malik from Muhammad ibn Yahya ibn Habban from al Araj from Abu Hurayra that the Messenger of Allah ﷺ forbade prayer after asr until the sun had set, and prayer after subh until the sun had risen.  

أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنِ الصَّلاَةِ بَعْدَ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ وَعَنِ الصَّلاَةِ بَعْدَ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ  

Good men, among whom was ʿUmar bin al-Khattab, and the best of thern in my view is ʿUmar, testified before me that the Messenger of Allah ﷺ said: ʿThere is no Prayer after two prayers: after Fajr until the sun has risen, and after ‘Asr until the sun has set.ʿ Qatadah narrated a similar report from Abul-ʿAliyah from Ibn ʿAbbas: Good men testified...  

وَقَالَ عَفَّانُ مَرَّةً شَهِدَ عِنْدِي رِجَالٌ مَرْضِيُّونَ وَأَرْضَاهُمْ عِنْدِي عُمَرُ أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَا صَلاةَ بَعْدَ صَلاتَيْنِ بَعْدَ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ وَبَعْدَ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ  

Some men of good character, among whom was ‘Umar, who is the best of them in my view, testified in my presence that the Messenger of Allah ﷺ forbade praying after Fajr prayer until the sun rose, and after Asr prayer until it (the sun) set.  

أَنَّهُ قَالَ شَهِدَ عِنْدِي رِجَالٌ مَرْضِيُّونَ فِيهِمْ عُمَرُ وَأَرْضَاهُمْ عِنْدِي عُمَرُ أَنَّ رَسُولَ اللهِ ﷺ نَهَى عَنْ صَلاةٍ بَعْدَ صَلاةِ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ وَبَعْدَ الْعَصْرِ حَتَّى تَغْرُبَ  

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  

“There is no prayer after the ‘Asr until the sun has set, and there is no prayer after the Fajr until the sun has risen.” (Using translation from Ibn Mājah 1249)   

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ لَا صَلَاةَ بَعْدَصَلَاتَيْنِ بَعْدَ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ وَبَعْدَ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ  

[Machine] According to Abu Sa'id Al-Khudri, they heard him saying that he heard Abu Al-Qasim saying, "There is no prayer after the Fajr prayer until the sun rises, and there is no prayer after the Asr prayer until the night."  

عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ أَنَّهُمَا سَمِعَاهُ يَقُولُ سَمِعْتُ أَبَا الْقَاسِمِ يَقُولُ لَا صَلَاةَ بَعْدَ صَلَاةِ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ وَلَا صَلَاةَ بَعْدَ صَلَاةِ الْعَصْرِ حَتَّى اللَّيْلِ  

Some reliable people testified before me, and among them was Umar ibn al-Khattab, and most reliable in my eyes was Umar: The Prophet of Allah ﷺ said: There is no prayer after the dawn prayer until the sun rises; and there is no prayer after the 'Asr prayer until the sun sets. (Using translation from Abū Dāʾūd 1276)  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «لَا صَلَاةَ بَعْدَ صَلَاةِ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ وَلَا صَلَاةَ بَعْدَ صَلَاةِ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ»  

Some reliable people testified before me, and among them was Umar ibn al-Khattab, and most reliable in my eyes was Umar: The Prophet of Allah ﷺ said: There is no prayer after the dawn prayer until the sun rises; and there is no prayer after the 'Asr prayer until the sun sets. (Using translation from Abū Dāʾūd 1276)   

عَنِ النَّبِيِّ ﷺ أَنَّهُ قَالَ «صَلَاتَانِ لَا صَلَاةَ* بَعْدَهُمَا صَلَاةُ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ وَصَلَاةُ الصُّبْحِ حَتَّى تَطْلُعَ الشَّمْسُ»  

'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»  

[Machine] "There were men who were sick in my presence, among them was Umar and their obedience to me was evident. Umar narrated that the Messenger of Allah ﷺ forbade praying after Fajr prayer until the sun rises, and after Asr prayer until the sun sets."  

شَهِدَ عِنْدِي رِجَالٌ مَرْضِيُّونَ فِيهِمْ عُمَرُ وَأَرْضَاهُمْ عِنْدِي عُمَرُ أَنَّ رَسُولَ اللهِ ﷺ نَهَى عَنِ الصَّلَاةِ أَوْ قَالَ لَا صَلَاةَ بَعْدَ الصُّبْحِ حَتَّى تُشْرِقَ الشَّمْسُ أَوْ تَطْلُعَ وَبَعْدَ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ  

"لَا صَلاَةَ بِعْدَ صَلاَةِ الصُّبْحِ حَتَّى تَرتَفِعَ الشَّمْسُ، وَلَا صَلاَةَ بَعْدَ صَلاَةِ العَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ".

. . . .

. . . .  

"عَنِ ابْنِ عَبَّاسٍ قَالَ: شَهِدَ عِنْدِى (رِجالٌ مَرْضِيُّونَ) وَأَرْضَاهم عِنْدِى عُمَرُ - أَنَّ رَسُولَ اللهِ ﷺ نَهَى عَنْ صَلَاةٍ بَعْدَ العَصْرِ حَتَّى تَغْرُبَ الشَّمسُ، وَعَنْ صَلَاةٍ بَعْدَ الصُّبْحِ حَتَّى تَشْرُقَ الشَّمسُ (*) ".