If I overslept and forgot to perform the Fajr prayer, only remembering it while the Friday sermon was being delivered, then performed it after Friday prayer, is my prayer valid? What should I do in this situation?

Prioritizing missed prayers over current ones is considered either obligatory or recommended, but if someone performs the current prayer before the missed one, their prayer remains valid. The ideal approach is to make up the missed Fajr prayer before attending Friday prayer if possible while still catching the Friday prayer, as many scholars emphasize the necessity of maintaining proper prayer sequence. If a person remembers a missed prayer during the Friday sermon, they are allowed to make it up if they can still join the Friday prayer, and many scholars consider this obligatory. There is scholarly debate on whether one should perform the missed prayer even if it means missing the Friday prayer or prioritize Friday prayer first before making up the missed one. The requirement of maintaining prayer order applies primarily to a small number of missed prayers according to the majority of scholars, who base their view on the Prophet Muhammad’s saying: "Whoever sleeps through a prayer or forgets it should pray it as soon as they remember." Some scholars argue that this order may be disregarded in cases of time constraints or forgetfulness.