It was narrated from Mu’adh bin Jabal that the Prophet (ﷺ) combined the Zuhr and ‘Asr, and the Maghrib and ‘Isha’ when traveling during the campaign of Tabuk.
Hadith ReferenceSunan Ibn Majah / Establishing the Prayer and the Sunnah Regarding Them / Hadith: 1070
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم