Ruling on standing for one's father and kissing his head

Question:
Is it permissible to kiss his head and stand up for him whenever his father comes in?

Answer:
The matter in this is broad. In the hadith of Fatimah, whenever he entered upon her, she would stand up for him, and whenever she entered upon him, he would stand up for her. This was narrated by a group of scholars of knowledge with a sound chain, including Abu Dawud and others. Al-Hafiz, the distinguished scholar Ibn Muflih, mentioned it in his book of etiquette regarding what is due to a son toward his father. Therefore, there is no blame in this.