Evidence for the obligation of the two sermons preceding the Friday prayer?

Question : What is the evidence?

Answer : There are, I mean, several pieces of evidence. The first piece of evidence is the saying of Allah the Exalted: So He commanded hastening to the remembrance of Allah from the time of the call. It is known with absolute certainty that the Prophet (peace and blessings be upon him), when the mu'adhdhin called on Friday, would deliver the sermon. So hastening to the sermon is obligatory, and what one must hasten to is obligatory. Yes, because hastening is the means to attaining it and achieving it. So if the means is obligatory, the goal is obligatory. Is that clear?
This is one piece of evidence. The second piece of evidence is that the Prophet (peace and blessings be upon him) forbade speaking while the imam is delivering the sermon. This indicates the obligation of listening to them, and the obligation of listening to them indicates the obligation of the two sermons, and that there must be two sermons.
Is that clear, everyone? The third piece of evidence is the Prophet's (peace and blessings be upon him) consistent practice of delivering them without interruption. There was no Friday on which the Prophet (peace and blessings be upon him) did not deliver the sermon. This continuous practice, in summer and winter, in hardship and ease, indicates their obligation.