For example the time of Fajr salah ends at 7:10 ok I start praying at 7:08 and finish the salah at 7:12. Then my salah is valid or not? I have to pray qaza or it’s ok?
بسم الله الرحمن الرحيم
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 Uloom Deoband