Sunan an-Nasa'i, Volume 1, Book 6, Hadith 529 (DarusSalam) ⓘ
It was narrated that An-Nu'man bin Bashir said: "I am the most knowledgeable of people about the time of the 'Isha' prayer. The Prophet used to pray it when the moon set on the third night of the month."
أَخْبَرَنَا مُحَمَّدُ بْنُ قُدَامَةَ، قَالَ حَدَّثَنَا جَرِيرٌ، عَنْ رَقَبَةَ، عَنْ جَعْفَرِ بْنِ إِيَاسٍ، عَنْ حَبِيبِ بْنِ سَالِمٍ، عَنِ النُّعْمَانِ بْنِ بَشِيرٍ، قَالَ أَنَا أَعْلَمُ النَّاسِ، بِمِيقَاتِ هَذِهِ الصَّلاَةِ عِشَاءِ الآخِرَةِ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُصَلِّيهَا لِسُقُوطِ الْقَمَرِ لِثَالِثَةٍ .
also referenced under: Book 6, Hadith 533 (In-Book)