"The Messenger of Allah used to like to delay the 'Isha', and he disliked sleeping before it, and engaging in conversation after it."
Sunan Ibn Majah Book 2, Hadith 35
← Previous Hadith The Messeenger of Allah said: "Whoever catches one Rak'ah of the Subh before the sun rises, then he has caught it, and whoever catches one Rak'ah of the 'Asr before the sun sets, then he has caught it." (Sahih)Another chain with similar wording.

Sunan Ibn Majah Book 2, Hadith 34 Next Hadith → "The Messenger of Allah did not sleep before the 'Isha' nor stay up (talking) after it."

Sunan Ibn Majah Book 2, Hadith 36