Sunan an Nasai
1444
Sahih+2

Musa bin Salamah narrated that he asked Ibn 'Abbas:"I missed the prayer in congregation when I was in Al-Batha; how do you think I should pray?" He said: "Two rak'ahs, the sunnah of the Messenger of Allah (ﷺ)

SahihAbu Ghuddah
SahihAl-Albani