Will persisting in sin lead to kufr of indifference?

Making a vow [nadhr] to one of the imams

It is not permissible to eat meat that was slaughtered for anyone or anything other than Allah, even if the one who slaughtered it mentioned the name of Allah over it

Qaseedat al-Burdah by al-Busayri and an explanation of what it contains of kufr and heresy

Ruling on making fun of the hijab

Ruling on praying in a mosque in which there is a grave

Showing off (riya) in worship

He made an amulet with Qur’aanic verses for his wife to wear

Referring for judgement to courts of man-made law in cases of necessity

Is it permissible to eat meat from an animal that was sacrificed for anyone other than Allah?