بُلُوغُ الْمَرَامِ
Bulugh al-Maram 151
The Book of Prayer
عَنْ عَبْدِ اَللَّهِ بْنِ عَمْرِوٍ رَضِيَ اَللَّهُ عَنْهُمَا; أَنَّ نَبِيَّ اَللَّهِ - صلى الله عليه وسلم -قَالَ: { وَقْتُ اَلظُّهْرِ إِذَا زَالَتْ اَلشَّمْسُ, وَكَانَ ظِلُّ اَلرَّجُلِ كَطُولِهِ مَا لَمْ يَحْضُرْ اَلْعَصْرُ, وَوَقْتُ اَلْعَصْرِ مَا لَمْ تَصْفَرَّ اَلشَّمْسُ, وَوَقْتُ صَلَاةِ اَلْمَغْرِبِ مَا لَمْ يَغِبْ اَلشَّفَقُ, وَوَقْتُ صَلَاةِ اَلْعِشَاءِ إِلَى نِصْفِ اَللَّيْلِ اَلْأَوْسَطِ, وَوَقْتُ صَلَاةِ اَلصُّبْحِ مِنْ طُلُوعِ اَلْفَجْرِ مَا لَمْ تَطْلُعْ اَلشَّمْسُ } رَوَاهُ مُسْلِمٌ [1] .
Narrated 'Abdullah bin 'Amr (RA): The Prophet (ﷺ) said: "The time of the Zuhr (noon) prayer is when the sun passes the meridian and a man's shadow is of the same length as his height. It lasts until the time of the 'Asr (afternoon) prayer. The time of the 'Asr prayer is as long as the sun has not become yellow (during its setting). The time of the Maghrib (sunset) prayer is as long as the twilight has not disappeared. The time of the 'Isha' (night) prayer is up to midnight. And the time of the Fajr (morning) prayer is from the appearance of dawn as long as the sun has not risen; (but when the sun rises abstain from prayer; for it rises between the two horns of Satan)." [Reported by Muslim].
Sunnah.com reference: Book 2, Hadith 1