It was not the custom of the salaf at the time of the Prophet (peace and blessings of Allaah be upon him) and the Rightly-Guided Caliphs to stand up every time they saw him [the Prophet] (peace and blessings of Allaah be upon him), as many people do. Rather Anas ibn Maalik said: “No person was dearer to them than the Prophet (peace and blessings of Allaah be upon him), but when they saw him they did not stand up for him because they knew that he disliked that.” Narrated by al-Tirmidhi, 2754; classed as saheeh by al-Albaani in Saheeh al-Tirmidhi. But they may have stood up for one who was returning from away, in order to greet him, as it was narrated that the Prophet (peace and blessings of Allaah be upon him) stood up for ‘Ikrimah, and he said to the Ansaar when Sa’dibn Mu’aadh came: “Stand up for your chief.” Narrated by al-Bukhaari, 3043; Muslim, 1768. That was when he [Sa’d] came to pass judgement on Banu Qurayzah, because they said that would accept his verdict.