Jami' at-Tirmidhi
Jami` at-Tirmidhi 444
وَرَوَاهُ سُفْيَانُ الثَّوْرِيُّ عَنِ الأَعْمَشِ، نَحْوَ هَذَا حَدَّثَنَا بِذَلِكَ، مَحْمُودُ بْنُ غَيْلاَنَ حَدَّثَنَا يَحْيَى بْنُ آدَمَ، عَنْ سُفْيَانَ، عَنِ الأَعْمَشِ، . قَالَ أَبُو عِيسَى وَأَكْثَرُ مَا رُوِيَ عَنِ النَّبِيِّ صلى الله عليه وسلم فِي صَلاَةِ اللَّيْلِ ثَلاَثَ عَشْرَةَ رَكْعَةً مَعَ الْوِتْرِ وَأَقَلُّ مَا وُصِفَ مِنْ صَلاَتِهِ بِاللَّيْلِ تِسْعُ رَكَعَاتٍ .
Unreviewed translation. All hadiths in this collection are available in five languages. Titles and introductions may remain in Arabic.
Sufyan al-Thawri also transmitted a similar report from al-Amash. Mahmud ibn Ghaylan narrated this to us: Yahya ibn Adam narrated to us, from Sufyan, from al-Amash. Abu Isa said: The greatest number reported from the Prophet for night prayer is thirteen rakahs including witr, and the least described of his night prayer is nine rakahs.