What is the ruling on naming a newborn with a name different from the one chosen by the father, and what is the advice for someone who swore she would not utter the name given, and is the father more entitled to name the child according to Sharia?

Naming the newborn is the father's right, as indicated by the Shariah proofs. If the parents dispute over naming the child, the father has more right, as evidenced by the Prophet Muhammad (peace be upon him) naming his son Ibrahim. It is best for the spouses to come to an understanding and choose a name they both agree upon, but if the wife insists on another name, it is not appropriate but should not lead to quarreling and contention.