Answer
(Fatwa: 1575/1060/H=1433)
(1) It is not wajib. However one should not let this great blessing slip off one’s hands and should continue with enthusiasm then it will cause blessings.
(2) It is hoped that in such case he shall not be sinful.
(3) Almighty Allah knows the best about the punishment of the hereafter. One should hope that Allah would forgive; however it is pure justice if one is punished as per his guilt.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband