When the Christians of Najran came to the Prophet (SAWA), their chiefs were al-Ahtam, al-'Aqib and al-Sayyid ...they asked, 'To what do you call us?' He said, 'To bear witness that there is no god but Allah and that I am the Messenger of Allah, and that Jesus was a created servant who ate, drank [water] and relieved himself... The Prophet (SAWA) said, 'Then invoke Allah's curse upon me. If I am telling the truth, the curse will descend upon yourselves and if not, then it will descend upon me.' They said, 'You have spoken fairly.' Then they made an appointment for the challenge. When they returned to their homes, their chiefs told them...'If he comes to invoke curse upon us with his people, we will accept the challenge, because he would not be a prophet, but if he challenges us with his close family, we must not accept, for he would not ris k his own family unless he was truthful. When the morning arrived, they came to the Prophet (SAWA), and he was accompanied by the Commander of the Faithful, Fatima, al-Hasan, and al-Husayn...They got scared and said to the Prophet (SAWA), 'We will give you what you want, so spare us this mutual invocation of curse.' The Prophet (SAWA) made a truce with them that they pay the tax (jizya) and they went back.'