Sunan Abi Dawud Book 5, Hadith 72
(This verse means) the prayer and vigil at night.
I used to live with the Messenger of Allah (ﷺ) at night. I would bring water for his ablution and his need. He asked: Ask me. I said: Your company in Paradise. He said: Is there anything other than that ? I said: It is only that. He said: Help me for yourself by making prostrations abundantly.
They (the people) used to pray between the Maghrib and 'Isha. The version of Yahya adds: The verse tatajafa junubuhum also means so.