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)." (FR)
Reference (FR): Sunan an-Nasa'i 1440 (FR)
In-book reference (FR): Book 15, Hadith 8 (FR)
English translation (FR): Vol. 2, Book 15, Hadith 1441 (FR)