angels send blessings on the Prophet; O People who Believe! Send blessings and abundant salutations upon him. (Everlasting peace and unlimited blessings be upon the Holy Prophet Mohammed.)" ___ The Holy Prophet (صلى الله عليه وآله وسلم) said: He who invokes blessings upon me once, Allah showers ten blessings upon him and obliterates (his) ten sins and elevates him by ten ranks.__ Once ‘Umar bin Khattab (رضي الله عنه) said to his nation: "The supplication is stopped between the heaven and the earth and nothing of it ascends, till you invoke blessing on your Prophet." Reference: Tirmidhi related in al-Jami‘-us-saheeh, b. of salat (prayer) ch.352 (2: 356 & 486).