بُلُوغُ الْمَرَامِ
Bulugh al-Maram 164
The Book of Prayer
وَلَهُ عَنْ عُقْبَةَ بْنِ عَامِرٍ: { ثَلَاثُ سَاعَاتٍ كَانَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -يَنْهَانَا أَنْ نُصَلِّي فِيهِنَّ, وَأَنْ [1] نَقْبُرَ فِيهِنَّ مَوْتَانَا: حِينَ تَطْلُعُ اَلشَّمْسُ بَازِغَةً حَتَّى تَرْتَفِعَ, وَحِينَ يَقُومُ قَائِمُ اَلظَّهِيرَةِ حَتَّى تَزُولَ [2] اَلشَّمْسُ, وَحِينَ تَتَضَيَّفُ [3] اَلشَّمْسُ لِلْغُرُوبِ } [4] .
'Uqbah bin 'Aamir (RA) narrated: "There are three times at which Allah's Messenger (ﷺ) used to forbid us to pray or bury our dead: (a) when the sun begins to rise till it is fully up, (b) when the sun is at its height at midday till it passes the meridian, and (c) when the sun draws near to setting till it sets." [Reported by Muslim].
Sunnah.com reference: Book 2, Hadith 15