the Messenger of Allah (ﷺ) forbade sleeping before the night prayer and talking after it.
Sunan Abi Dawud Book 43, Hadith 77
← Previous Hadith The Messenger of Allah (ﷺ) came upon me when I was sitting thus: having my left hand behind my back and leaning on the fleshy part of it, and said: Are you sitting in the manner of those with whom Allah is angry?

Sunan Abi Dawud Book 43, Hadith 76 Next Hadith → When the Prophet (ﷺ) prayed the dawn prayer, he sat cross-legged where he was till the sun had come well up.

Sunan Abi Dawud Book 43, Hadith 78