Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Jarir (may Allah be pleased with him), he says: I came to the Noble Prophet (peace and blessings be upon him) while he was taking the pledge (bay'ah). I said: O Messenger of Allah! Extend your hand so that I may also pledge allegiance to you, and set a condition upon me, for you know best. The Prophet (peace and blessings be upon him) said: "I take your pledge that you will worship Allah Almighty, establish prayer, pay zakat, show compassion to the Muslims, and keep away from the polytheists."