Ali ibn Abi Talib and Zayd ibn Harithah accept Islam
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After Khadijah, Ali ibn Abi Talib (may Allah be pleased with him) accepted Islam. He was ten years old at the time and living in the house of the Messenger of Allah. When Abu Talib went through a period of hardship during a famine, the Messenger of Allah had taken his son Ali into his own home and brought him up.
Zayd ibn Harithah, the freed slave of the Messenger of Allah, whom he had adopted, also became a Muslim. The Islam of these people reflected the beliefs of those who knew the Messenger of Allah best. They had witnessed his truthfulness, sincerity and good
behavior. The people who live in a house always know best what is in it.