Answer:
(Fatwa: 87/87=L)
Yes, you have to remake your Fajr salah;وجد فی ثوبہ منیاً او بولاً اعاد من آخر احتلام و بول و رعاف (الدر المختار مع الشامی 1/378), but you will not be sinful for praying the salah in ignorance with impurity since the Prophet (صلی اللہ علیہ وسلم) said: ‘My Ummah will not be answerable for the actions they commit in ignorance’.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
