"There are three times at which the Messenger of Allah forbade us to pray or to bury our dead: When the sun has risen fully until it is higher, when it reaches its zenith until it has passed the zenith, and when the sun starts to set" (Sahib) (Using translation from Nasāʾī 2013)
ثَلَاثُ سَاعَاتٍ كَانَ رَسُولُ اللهِ ﷺ «يَنْهَانَا أَنْ نُصَلِّيَ فِيهِنَّ أَوْ نَقْبُرَ فِيهِنَّ مَوْتَانَا حِينَ تَطْلُعُ الشَّمْسُ بَازِغَةً حَتَّى تَرْتَفِعَ وَحِينَ يَقُومُ قَائِمُ الظَّهِيرَةِ حَتَّى تَزُولَ الشَّمْسُ وَحِينَ تَضَيَّفُ الشَّمْسُ لِلْغُرُوبِ»