It was narrated that Ibn 'Abbas said:
"I prayed behind the Messenger of Allah (ﷺ) eight (Rak'ahs) together and seven (Rak'ahs) together." (JA)
English reference (JA): Vol. 1, Book 6, Hadith 604 (JA)
Arabic reference (JA): Book 6, Hadith 610 (JA)