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