Al-Ahzab 33:56

Inna Allaha wamala-ikatahu yusalloonaAAala annabiyyi ya ayyuha allatheenaamanoo salloo AAalayhi wasallimoo tasleema

Indeed, Allāh confers blessing upon the Prophet, and His angels [ask Him to do so]. O you who have believed, ask [Allāh to confer] blessing upon him and ask [Allāh to grant him] peace.

Surely, Allah and His angels send blessings to the Prophet. O you who believe, do pray Allah to bless him, and send your Salām (prayer for his being in peace) to him in abundance.