When the apostle heard what she had said he said, 'Who will rid me of Marwan's daughter ? ‘Umayr b. 'Adiy al-Khatmi who was with him heard him, and that very night he went to her house and killed her.
In the morning he came to the apostle and told him what he had done and he said, “You have helped God and His apostle, O‘Umayr!”
When he asked if he would have to bear any evil consequences the apostle said, “Two goats won't butt their heads about her,” so ‘Umayr went back to his people.
Now there was a great commotion among B. Khatma that day about the affair of Bint Marwan. She had five sons, and when `Umayr went to them from the apostle he said, ”I have killed Bint Marwan, O sons of Khatma. Withstand me if you can; don't keep me waiting.”
That was the first day that Islam became powerful among B. Khatma; before that those who were Muslims concealed the fact. The first of them to accept Islam was ‘Umayr b. `Adiy who was called “the Reader”, and 'Abdullah b. Aus and Khuzayma b. Thabit.
The day after Bint Marwan was killed the men of B. Khatma became. Muslims because they saw the power of Islam.