A spy from among the polytheists came to the Prophet (may Allah's peace and blessings be upon him) while he was on a journey.

This Hadīth highlights the Islamic ruling on a person who spies over the Muslims while he is one of the combatant disbelievers. Salamah ibn Al-Akwa‘ (may Allah be pleased with him) said: "A spy from among the polytheists came to the Messenger of Allah (may Allah's peace and blessings be upon him)." The Arabic version of the Hadīth uses the word "‘ayn" (eye) in reference to the spy because the act of spying depends upon the eye, and because a spy is mainly concerned with and focused on watching, as if his whole body has become an eye. "The spy stayed with the Prophet's Companions (may Allah be pleased with them) and talked with them and then went away. Thereupon, the Prophet (may Allah's peace and blessings be upon him) said: 'Pursue and kill him.' So, I killed him." Here, Salamah says that he pursued the spy, caught him, and killed him. "And the Prophet (may Allah's peace and blessings be upon him) gave me his belongings (as an extra share)." The Prophet (may Allah's peace and blessings be upon him) gave Salamah all the belongings of the man, including clothes, weapons, riding mount, and its saddle, along with all the money, gold, and silver which the killed person had.