Many instances are on record when Umar gave a particular opinion and that opinion was later on corroborated by Allah and conurmation thereof was communicated to the Holy Prophet through Gabriel. That is why the Holy Prophet repeatedly said: "God speaks through the tongue of Umar."

Umar suggested that the station of Abraham in Mecca should be used as a place of prayer. Later an injunction to this effect was revealed to the Holy Prophet.

Umar suggested that the wives of the Holy Prophet should be veiled. Later a verse was revealed enjoining the wives of the Holy Prophet to be veiled.

Umar suggested that the use of wine should be prohibited. Thereafter God enjoined the prohibition of wine.

Umar suggested, "The words 'I testify that Muhammad is the Messenger of God'

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