Sunnah prayer for one who misses Fajr prayer in congregation

Question

Praise be to Allah.

If a person misses Fajr prayer in congregation and did not
catch up with it, then he should start with the Sunnah prayer and offer that
first, then pray Fajr. When the Prophet (sa) slept one night and missed Fajr
prayer whilst travelling, and nothing woke him up except the heat of the
sun, he offered the Sunnah prayer then he prayed Fajr, and he gave
instructions that the adhaan and iqaamah should be given as was usual. So if
a person misses Fajr prayer and does not wake up until after the people have
prayed, or he comes to the mosque and finds that the people have already
prayed, then he should offered the Sunnah prayer of two rak‘ahs, then pray
Fajr. This is the Sunnah.

But if he delays it until after the prayer or after the sun
has risen, there is nothing wrong with that. But it is preferable to start
with it, as the Prophet (blessings and peace of Allah be upon him) did when
he missed the prayer on one of his journeys.

If he comes to the congregation and finds them already
praying and he prays with them without having offered the Sunnah prayer
first, he may offer it after the (obligatory) prayer, to make it up, or he
may offer it after the sun has risen and become high, which is preferable.
Both options are mentioned in the hadeeth, and he has the choice, in sha
Allah: he may offer it after Fajr, in the mosque or at home, or if he wishes
he may offer it after the sun has risen and become high. The matter is broad
in scope, praise be to Allah, and both are mentioned in hadeeths from the
Prophet (blessings and peace of Allah be upon him). End quote.

Shaykh ‘Abd al-‘Azeez ibn Baaz (may Allah have mercy on him)