Sunan Abi Dawud Book 5, Hadith 45
I asked Jabir b. Samurah: Did you sit in the company of the Messenger of Allah (ﷺ) ? He replied: Yes, very often. He would not stand from the place he prayed the dawn prayer till the sunrise. When the sun rose, he would stand (to pray Duha).
The Messenger of Allah (ﷺ) never offered prayer in the forenoon, but I offer it. The Messenger of Allah (ﷺ) would give up an action, though he liked it to do, lest the people should continue it and it is prescribed for them.
The Prophet (ﷺ) said: Prayer by night and day should consist of pairs of rak'ahs.