Sunan an-Nasa’i 530
The Book of the Times (of Prayer)
What Is Recommended Regarding Delaying 'Isha'
Sayyar bin Salamah said: "My father and I entered upon Abu Barzah, and my father said to him: 'How did the Messenger of Allah (ﷺ) pray the prescribed prayers?' He said: He used to pray Zuhr, which you call Al-Uala (the first) when the sun passed its zenith; he used to pray 'Asr then one of us could go back to his home in the farthest part of Al-Madinah when the sun was still bright.'" - He said: "I forgot what he said to me about Maghrib." - "And he used to like to delay 'Isha', which you call Al-'Atamah, and he did not like to sleep before it nor speak after it. And he used to finish the Al-Ghadah (Fajr) prayer when a man could recognize his neighbor, and he used to recite between sixty and one hundred verses.'"