كتاب المواقيت
6  
The Book of the Times (of Prayer)
(20)
Chapter: What Is Recommended Regarding Delaying 'Isha'
(20)
باب مَا يُسْتَحَبُّ مِنْ تَأْخِيرِ الْعِشَاءِ ‏
Sunan an-Nasa'i 533
It was narrated that Jabir bin Samurah said:
"The Messenger of Allah (ﷺ) used to delay the later 'Isha'."[1] [1] It is described as the later 'Isha' prayer because the Maghrib prayer is sometimes called 'Isha' prayer, but it is the first 'Isha'. Some scholars are of the opinion that it is disliked to call Maghrib 'Isha' without qualifying it as the first 'Isha'. See Fath Al-Bari.
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا أَبُو الأَحْوَصِ، عَنْ سِمَاكٍ، عَنْ جَابِرِ بْنِ سَمُرَةَ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُؤَخِّرُ الْعِشَاءَ الآخِرَةَ ‏.‏
Grade: Sahih (Darussalam)
Reference : Sunan an-Nasa'i 533
In-book reference : Book 6, Hadith 40
English translation : Vol. 1, Book 6, Hadith 534