Abu Sa'id Al-Khudri (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) sent a detachment to Banu Lahyan tribe and remarked, "Let one of every two men get ready to advance, and both will earn the same reward".[Muslim]. (JA)
Arabic/English book reference (JA): Book 1, Hadith 178 (JA)