He continued until he had taken their covenant upon them and did not leave them in any doubt (Ghumma), even saying to them while they were hearing and seeing: "This is your Lord, so worship Him; this is your Creator, so recognize Him; this is your Originator who has called you from Himself unto Himself, so worship Him and obey Him." And do not break [the oath], for he who breaks his word only breaks it to his own detriment, and the evil plot does not encompass except its authors.
The witness to this is the word of the Almighty: "O mankind, worship your Lord, who created you and those before you, that you may become righteous. [He] who made for you the earth a resting place and the sky a canopy and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [the truth]" 1 .
Then Umar ibn al-Khattab stood up and said: "Bravo, bravo (Bakhin Bakhin), O son of Abu Talib! You have become my Master (Mawla) and the Master of all believers." The Messenger of Allah—Exalted is His Majesty—said to him: "You have spoken the truth, O Umar. Indeed, Allah is your Master, and He is the Excellent Protector and the Excellent Helper.