What is the expiation (kaffarah) required for a female friend who vowed to leave a young man, abandon a habit, and vowed not to cut her hair and not to ride her brother's car for the sake of a child, and she did not fulfill those vows?

You must stop talking to a foreign young man if you fear temptation from him, and stop masturbating.

A vow to abandon a sin confirms the obligation to abandon it, and not fulfilling it increases the sin.

Sincere repentance and an abundance of good deeds are necessary.

Scholars differed regarding a vow to abandon a sin. The majority held that it is not binding and incurs no expiation. Some held that expiation is obligatory along with repentance, and this is more cautious.

A vow to cut hair (unless it involves imitation) and to ride a brother's car is a vow to abandon something permissible. It is not binding according to the majority of scholars. Some believe the person who made the vow has the choice between fulfilling it or offering an expiation for an oath, and expiation for an oath is more cautious.