بسم الله الرحمن الرحيم
(Fatwa: 510/427/SD=06/1440)
If the time of Fajr ends at 7:10 and your salah finished at 7:12 then according to Shariah this salah was not valid rather it became invalid. Thus it is mandatory to make qaza of it.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
