The Prophet (ﷺ) used to pray the Zuhr at midday, and the `Asr at a time when the sun was still bright, the
Maghrib after sunset (at its stated time) and the `Isha at a variable time. Whenever he saw the people
assembled (for `Isha' prayer) he would pray earlier and if the people delayed, he would delay the
prayer. And they or the Prophet (ﷺ) used to offer the Fajr Prayers when it still dark.
Sahih al-Bukhari Book 9, Hadith 37