Whenever Hadhrat Umar (radhiallahu anhu) would see a person engaging in futile or unnecessary conversation after Isha Salaat, he would order the conversation to stop. He would add: "Go to bed early for perhaps you may be granted the fortune of rising for (Tahajjud) Salaat."
Indulgence in unnecessary and futile talk after Isha Salaat is prohibited in the Hadith. Allah Ta'ala has created the night for rest and the early hours before Fajr, for Ibaadat. The night is not meant to be wasted in conversation or any other activity which brings about a degeneration in spiritual progress.
