Sahih Muslim 17a

Khalaf ibn Hisham narrated to us; Hammad ibn Zayd narrated to us, from Abu Jamrah, who said: I heard Ibn Abbas. H. Yahya ibn Yahya narrated to us—and his is the wording—Abbad ibn Abbad informed us, from Abu Jamrah, from Ibn Abbas, who said: The delegation of Abd al-Qays came to the Messenger of Allah (peace and blessings be upon him) and said, ‘Messenger of Allah, we are this clan of Rabi'ah, and the unbelievers of Mudar stand between us and you, so we can reach you only during the sacred month. Give us a command that we may act upon and invite those behind us to.’ He said, ‘I command you to do four things and forbid you from four: belief in Allah’—then he explained it to them, saying—‘bearing witness that there is no deity except Allah and that Muhammad is the Messenger of Allah, establishing the prayer, giving zakat, and paying one-fifth of the spoils you acquire. I forbid you from the dubba, the hantam, the naqir, and the muqayyar.’ Khalaf added in his version: ‘Bearing witness that there is no deity except Allah,’ and he counted one with his finger.