Are eating poison, inserting a sword into the abdomen, and having it emerge from the back normal acts for an ordinary man, and is it permissible to accept his invitation to eat and marry his daughters, knowing that it is said his lineage traces back to the household of the Chosen One (may Allah's peace and blessings be upon him)?

Most often, those who engage in such acts of charlatanry, talismans, subjugating jinn, and mesmerizing people's eyes are sorcerers, and it is obligatory to abandon them for the sake of Allah and to despise them, as the Prophet, peace and blessings be upon him, said: "The firmest handholds of faith are love for the sake of Allah, hate for the sake of Allah, loyalty for the sake of Allah, and enmity for the sake of Allah." Therefore, it is not permissible to accept his invitation to eat until he repents. As for marrying his daughters, there is no harm in it if they are Muslim women adhering to the Sharia, do not participate in their father's actions, do not approve of them, and are not held accountable for their father's sins.