Sahih al-Bukhari · Hadith 2783

Fighting for the Cause of Allah (Jihaad)

Narrated Ibn `Abbas: Allah's Messenger (ﷺ) said, "There is no Hijra (i.e. migration) (from Mecca to Medina) after the Conquest (of Mecca), but Jihad and good intention remain; and if you are called (by the Muslim ruler) for fighting, go forth immediately