Allah sends His Salat (Graces, Honours, Blessings, Mercy, etc.) on the Prophet (Muhammad SAW) and also His angels too (ask Allah to bless and forgive him). O you who believe! Send your Salat on (ask Allah to bless) him (Muhammad SAW), and (you should) greet (salute) him with the Islamic way of greeting (salutation i.e. AsSalamu 'Alaikum).
실로 하나님과 천사들이 예 언자를 축복하여 주셨으니 믿는자들이여 그분께 축복을 드리고 정 중한 인사를 하라