Is it permissible for the father to disregard the mother's opinion regarding the naming of the newborn, taking into account the suffering she is enduring and her fear of the name's impact on her treatment of her son?

You have done well to be content with the ruling of Sharia (definition), and we ask Allah for blessings upon the newborn. Naming the child is the father's right, and the child is attributed to him. It is not a condition for the mother to receive compensation for her worldly efforts. It is recommended for the father to consult with the mother and try to reconcile their wishes, but in case of disagreement, he makes the decision. A father's dutifulness to his own father is a good deed, and if he misses honoring him with this child, he might miss it in the future. He may appease his wife by allowing her to name the next child. The name "Najeeb" is good and signifies brilliance, excellence, intelligence, and generosity, which are qualities to be optimistic about for the newborn.