He heard the Prophet ﷺ say, "Any Muslim man who fights in the cause of Allah for the time it takes between two milkings of a she-camel will be granted Paradise."
حدثنا بشر بن آدم حدثنا الضحاك بن مخلد حدثنا ابن جريج حدثنا سليمان بن موسى حدثنا مالك بن يخامر
أنه سمع النبي ﷺ يقول من قاتل في سبيل الله عز وجل من رجل مسلم فواق ناقة وجبت له الجنة
Its isnad is sahih. Tirmidhi transmitted it in the chapters on the virtues of jihad, in the chapter on those who ask for martyrdom, hadith 1654, 1657, from the hadith of Ibn Jurayj with this wording, and he said, hasan sahih. Abu Dawud transmitted it, hadith 2541, through another route from Malik bin Yakhamir with this wording.