Sunan Ibn Majah 1068
سنن ابن ماجه#1068SahihIt was narrated that Ibn ‘Abbas said:“Allah enjoined the prayer upon the tongue of your Prophet (ﷺ): Four Rak’ah while a resident and two Rak’ah when traveling.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 5:266