You are correct that the law of obeying both parents is considered mandatory in many cultures and religions, including Islam, Christianity, and Judaism. According to these traditions, parents must be respected and obeyed, as they have been given a great responsibility in raising and caring for their children. Mothers are often seen as particularly important, as they carry and give birth to the child, and provide physical and emotional care during the child's early years. Fathers are also important figures in the family, serving as leaders and role models for their children.

It's a great point to mention that both parents have different but important roles in the family. They both need to be respected, obeyed, and loved. They should be treated with humility, compassion, and patience, especially as they get older. It's also important to remember that they have sacrificed a lot for the children, and they should be thanked, and thanked by praying for them.