Jibril taught the prayer times

Angel Jibril led the Prophet ﷺ in prayer at the start and end of each time.

Narrated by Abdullah ibn Abbas

Jibril led me in prayer at the House twice. He prayed Dhuhr when the sun had passed its height, Asr when the shadow of everything was as long as itself, Maghrib when the fasting person breaks the fast, Isha when the twilight had gone, and Fajr when eating becomes forbidden for the fasting person. The next day he prayed each of them later ... then he said: "O Muhammad, this is the time of the prophets before you, and the time is what is between these two times."

Sunan Abi Dawud 393, Jami' at-Tirmidhi 149

What this hadith teaches

This hadith is the foundation of the prayer timetable. Each prayer has a start and an end; the calculated times on JiiiMu and Masjid TV follow these signs of the sun.

Reference and grade

Grade
Hasan sahih (at-Tirmidhi; al-Albani: hasan sahih)
Narrator
Abdullah ibn Abbas

The hadith in Arabic نص الحديث

أَمَّنِي جِبْرِيلُ عَلَيْهِ السَّلاَمُ عِنْدَ الْبَيْتِ مَرَّتَيْنِ فَصَلَّى بِيَ الظُّهْرَ حِينَ زَالَتِ الشَّمْسُ وَكَانَتْ قَدْرَ الشِّرَاكِ وَصَلَّى بِيَ الْعَصْرَ حِينَ كَانَ ظِلُّهُ مِثْلَهُ وَصَلَّى بِيَ - يَعْنِي الْمَغْرِبَ - حِينَ أَفْطَرَ الصَّائِمُ وَصَلَّى بِيَ الْعِشَاءَ حِينَ غَابَ الشَّفَقُ وَصَلَّى بِيَ الْفَجْرَ حِينَ حَرُمَ الطَّعَامُ وَالشَّرَابُ عَلَى الصَّائِمِ فَلَمَّا كَانَ الْغَدُ صَلَّى بِيَ الظُّهْرَ حِينَ كَانَ ظِلُّهُ مِثْلَهُ وَصَلَّى بِيَ الْعَصْرَ حِينَ كَانَ ظِلُّهُ مِثْلَيْهِ وَصَلَّى بِيَ الْمَغْرِبَ حِينَ أَفْطَرَ الصَّائِمُ وَصَلَّى بِيَ الْعِشَاءَ إِلَى ثُلُثِ اللَّيْلِ وَصَلَّى بِيَ الْفَجْرَ فَأَسْفَرَ ثُمَّ الْتَفَتَ إِلَىَّ فَقَالَ يَا مُحَمَّدُ هَذَا وَقْتُ الأَنْبِيَاءِ مِنْ قَبْلِكَ وَالْوَقْتُ مَا بَيْنَ هَذَيْنِ الْوَقْتَيْنِ

Arabic text of Sunan Abi Dawud 393, as given on sunnah.com.