What is the best way to deal with a four-year-old child who repeatedly kisses on the mouth, and what is the correct educational and psychological procedure to correct his behavior without him being negatively affected in the future?

Striving to raise young children on virtuous morals, adherence to Islamic law, and preventing them from getting accustomed to unlawful things is essential, because leaving them to watch obscene scenes and debased films is a religious and psychological danger. Television and video should be used for what is beneficial and turned off for what is not. Media outlets should only publish what is useful. Parents must raise their children on religion and morals and warn them against watching indecency and other things that corrupt their minds, religion, and studies. It is forbidden for you to kiss your son or allow him to do so if it arouses your desire.