Perform wudu after kissing one's spouse.

This hadith, narrated by Abdullah ibn Masud, states that it is necessary for a man to perform wudu after kissing his spouse. Wudu is an Islamic ritual of washing certain parts of the body with water in order to be considered clean and pure before engaging in prayer or other religious activities. This hadith emphasizes the importance of maintaining purity and cleanliness even when engaging in intimate acts such as kissing one's spouse. It also serves as a reminder that Muslims should always strive to remain mindful of their faith and practice its teachings even during moments of intimacy with their spouses.