Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both) narrates that the Messenger of Allah (peace and blessings be upon him) said: Whoever kills a Mu'ahid (a non-Muslim with whom there is a peace treaty), he will not even smell the fragrance of Paradise, though its fragrance can be perceived from a distance of forty years. Marwan, the narrator, has narrated it in the same way.