It is obligatory to offer the Salah in its due time and it is not permissible to delay a Salah or offer it before its due time.
The time for the `Isha’ Prayer is when the twilight disappears; so offer the `Isha' Prayer when the twilight disappears. Anyone who offers it before the red twilight disappears, their Salah is Batil (null and void), unless they have a legal excuse to combine it with the Maghrib (Sunset) Prayer, such as being on a journey, being ill, or during times of rain. (Part No. 6; Page No. 151) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.