It was narrated that 'Umar said:
"The prayer for jumu'ah is two rak'ahs, and for Al-Fitr is two rak'ahs, and for An-Nahr is two rak'ahs, and for traveling is two rak'ahs, complete and not shortened, on the tongue of the Prophet (ﷺ)."
Reference: Sunan an-Nasa'i 1440
In-book reference: Book 15, Hadith 8
English translation: Vol. 2, Book 15, Hadith 1441