Sahih al-Bukhari Book 9, Hadith 36
We used to offer the Maghrib prayer with the Prophet (ﷺ) and after finishing the prayer one of us may go
away and could still see as Par as the spots where one's arrow might reach when shot by a bow.
The Prophet (ﷺ) said, "The example of Muslims, Jews and Christians is like the example of a man who employed laborers to work for him from morning till night. They worked till midday and they said, 'We are not in need of your reward.' So the man employed another batch and said to them, 'Complete the rest of the day and yours will be the wages I had fixed (for the first batch). They worked until the time of the `Asr prayer and said, 'Whatever we have done is for you.' He employed another batch. They worked for the rest of the day till sunset, and they received the wages of the two former batches."
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.