What is the ruling on praying two rak'ahs after the imam enters and before the khutbah?

Question : Shaykh, what is your opinion of people who pray before the imam's khutbah? When the imam finishes his greeting, they stand up and pray two rak'ahs. What do you think of this?

Answer : My opinion is that this is wrong. It is wrong because it has no basis. The adhan that the Messenger (peace and blessings be upon him) mentioned between every prayer, except for Jumu'ah, is established, because it is proven that the Companions did not do anything when the preacher entered except that whoever entered the mosque would pray two rak'ahs.