The ruling on one who missed the Fajr prayer and caught up with the Jumu'ah prayer

The questioner:
And to you, Honorable Shaykh. This questioner says: A person missed the Fajr prayer without his own choice, and he is one of those who are diligent in attending the congregational prayer. He did not wake up until the iqamah for the Jumu'ah prayer. Then he prayed Jumu'ah with the intention of Fajr, and then he made up the Zuhr prayer afterwards with four rak'ahs. Is his action valid?

The Shaykh:
His action is not valid. He should have prayed Fajr first, two rak'ahs, and then prayed Jumu'ah. He should have prayed Fajr first, then prayed Jumu'ah. Even if he did not catch up with Jumu'ah except for the last rak'ah, he should pray Fajr first, two rak'ahs, then join the imam in what remains of Jumu'ah. If he caught up with a complete rak'ah, it counts as Jumu'ah. If he caught up with less than a rak'ah, he completes it as Zuhr.

The presenter:
May Allah reward you, Honorable Shaykh, this questioner.

The Shaykh:
He did not wake up until the iqamah for the Jumu'ah prayer. It was obligatory for him to pray Fajr, then join the imam in what remains of the Jumu'ah prayer. If he caught up with a complete rak'ah, he completes it as Jumu'ah, adding another rak'ah to it and completing it as Jumu'ah. If he caught up with less than a rak'ah, he intends it as Zuhr and completes it.