What is the ruling on Tahlil marriage, how much is a wife's share of her husband's inheritance, and is it permissible for Muslims to fight one another?

The "Muhallil" marriage is forbidden and does not make a irrevocably divorced woman lawful for the man from whom she was divorced. And "the Messenger of Allah, peace and blessings be upon him, cursed the Muhallil and the Muhallal lah (the one for whom she is made lawful)."