Abu Huraira is reported to have said that the Messenger of Allah ﷺ prohibited to observe prayer after the 'Asr prayer till the sun is set, and after the dawn till the sun rises.

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

I heard it from so many Companions of the Messenger of Allah ﷺ and one among them is 'Umar b. Khattab, and he is most dear to me among them that the Messenger of Allah ﷺ prohibited observing of prayer after the dawn prayer till the sun rose and after the 'Asr till the sun set.

سَمِعْتُ غَيْرَ وَاحِدٍ مِنْ أَصْحَابِ رَسُولِ اللَّهِ ﷺ مِنْهُمْ عُمَرُ بْنُ الْخَطَّابِ وَكَانَ أَحَبَّهُمْ إِلَىَّ أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنِ الصَّلاَةِ بَعْدَ الْفَجْرِ حَتَّى تَطْلُعَ الشَّمْسُ وَبَعْدَ الْعَصْرِ حَتَّى تَغْرُبَ الشَّمْسُ

This hadith has been narrated by Qatada with the same chain of transmitters with a minor alteration of words.

أَنَّ فِي حَدِيثِ سَعِيدٍ وَهِشَامٍ بَعْدَ الصُّبْحِ حَتَّى تَشْرُقَ الشَّمْسُ

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

Let not any one of you intend to observe prayer at the time of the rising of the sun or of the setting sun.

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ يَتَحَرَّى أَحَدُكُمْ فَيُصَلِّي عِنْدَ طُلُوعِ الشَّمْسِ وَلاَ عِنْدَ غُرُوبِهَا

Do not intend to observe prayer at the time of the rising of the sun nor at its setting, for it rises between the horns of Satan.

قَالَ رَسُولُ اللَّهِ ﷺ لاَ تَحَرَّوْا بِصَلاَتِكُمْ طُلُوعَ الشَّمْسِ وَلاَ غُرُوبَهَا فَإِنَّهَا تَطْلُعُ بِقَرْنَىْ شَيْطَانٍ

When the rim of the sun starts appearing defer prayer till it completely appears, and when the rim of the sun disappears defer prayer till it completely disappears.

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا بَدَا حَاجِبُ الشَّمْسِ فَأَخِّرُوا الصَّلاَةَ حَتَّى تَبْرُزَ وَإِذَا غَابَ حَاجِبُ الشَّمْسِ فَأَخِّرُوا الصَّلاَةَ حَتَّى تَغِيبَ

The Messenger of Allah ﷺ led us in the 'Asr prayer at (the place known as) Mukhammas, and then said: This prayer was presented to those gone before you, but they lost it, and he who guards it has two rewards in store for him. And no prayer is valid after till the onlooker appears (by onlooker is meant the evening star).

صَلَّى بِنَا رَسُولُ اللَّهِ ﷺ الْعَصْرَ بِالْمُخَمَّصِ فَقَالَ إِنَّ هَذِهِ الصَّلاَةَ عُرِضَتْ عَلَى مَنْ كَانَ قَبْلَكُمْ فَضَيَّعُوهَا فَمَنْ حَافَظَ عَلَيْهَا كَانَ لَهُ أَجْرُهُ مَرَّتَيْنِ وَلاَ صَلاَةَ بَعْدَهَا حَتَّى يَطْلُعَ الشَّاهِدُ وَالشَّاهِدُ النَّجْمُ

This hadith has been narrated by Abu Basra Ghifari through another chain of transmitters.

صَلَّى بِنَا رَسُولُ اللَّهِ ﷺ الْعَصْرَ بِمِثْلِهِ

There are three times during which the Messenger of Allah ﷺ would forbid us to pray, or to bury our dead: when the sun rises visibly until it has ascended, when the midday heat reaches its height until the sun declines, and when the sun inclines toward setting until it has set.

ثَلاَثُ سَاعَاتٍ كَانَ رَسُولُ اللَّهِ ﷺ يَنْهَانَا أَنْ نُصَلِّيَ فِيهِنَّ، أَوْ أَنْ نَقْبُرَ فِيهِنَّ مَوْتَانَا: حِينَ تَطْلُعُ الشَّمْسُ بَازِغَةً حَتَّى تَرْتَفِعَ، وَحِينَ يَقُومُ قَائِمُ الظَّهِيرَةِ حَتَّى تَمِيلَ الشَّمْسُ، وَحِينَ تَضَيَّفُ الشَّمْسُ لِلْغُرُوبِ حَتَّى تَغْرُبَ.