If the custom is for a girl not to marry her cousin, does he become a mahram for her?

Ruling on marriage to the sister of a person with whom he was breastfed

Should he marry his paternal uncle’s illegitimate daughter?

Can he marry his paternal cousin’s daughter?

Marrying the sister of his ex-wife

Should he marry a woman who got divorced for his sake?

He is not sure whether he breastfed from her grandmother – may he marry her?

She married the one who committed zina with her after she gave birth and the nifaas bleeding stopped

It is not permissible to marry a zaani or zaaniyah unless they have repented

Marrying a woman from the people of innovation, and are conditions stipulated by the woman’s guardians binding?