The Messenger of Allah ﷺ came one day with a joyful expression on his face. He said: "Jibril came to me and said: 'Will it not please you, O Muhammad, (to know) that no one of your Ummah will send salah upon you but I will send salah upon him tenfold, and no one will send salams upon you but I will send salams upon him tenfold?" (Using translation from Nasāʾī 1295)
"أتانى جبريل فقال: يا محمدُ إن ربك يقولُ: أما يرضيك أنه لا يصلى عليك أحد من أمتك إلا صليتُ عليه عشرًا، ولا يسلم عليك أحدٌ من أمتك إلا سلمت عليه عشرًا".