What is the time for making up the sunnah of Fajr for one who missed it?

This message is from a listener in Hawtat Bani Tamim, from Zayd 'Abd al-'Aziz al-Qurashi. He says: I hope for an answer to my question, which is: If one is delayed from the Fajr prayer with the congregation due to sleep or otherwise, when are the two rak'ahs of the sunnah, before or after the Fajr prayer? And to you my thanks and my sincere greetings.
Answer: If a person is delayed from the congregation in the Fajr prayer and does not catch up with the congregation, he begins with the regular sunnah, prays it, and then prays the obligatory prayer. The Prophet (peace and blessings be upon him), when he slept one night during travel and missed the Fajr prayer, and was not woken up until the heat of the sun, the Prophet (peace and blessings be upon him) prayed the regular sunnah and then prayed Fajr, peace and blessings be upon him, and he ordered the adhan and iqamah as usual. So if a person misses the Fajr prayer and does not wake up until after the people have prayed, or he comes to the mosque and the people have already prayed, he prays the regular sunnah, two rak'ahs, and then prays the obligatory prayer. This is the sunnah. If he delays it and prays it after the prayer or after the sun rises, there is no harm. But the better and more preferable is to begin with it, as the Prophet (peace and blessings be upon him) began with it when he missed the prayer in some of his travels. If he comes and finds them praying, and he has not prayed the regular sunnah, he prays it after the prayer if he wishes, or he prays it after the sun has risen, which is better, because there is a hadith with this and a hadith with that. So he has a choice: if he wishes, he prays it after the Fajr prayer in the mosque or in his house, and if he wishes, he prays it after the sun has risen. All of that is spacious, praise be to Allah, and everything that comes with a good hadith from the Prophet (peace and blessings be upon him) is valid. Yes.