Narrated AbuJurayy al-Hujaymi: I came to the Prophet ﷺ and said: Upon you be peace, Messenger of Allah! He said: Do not say: Upon you be peace, for "Upon you be peace" is the salutation to the dead.
The values taught by this hadith include showing respect for others, being mindful of our words and actions, being kind and courteous in all interactions, and remembering our manners at all times. It also reminds us of how important it is to remember those who have passed away by using appropriate phrases when speaking about them or addressing them directly.