As Salaamu Alaikum,
Can a man marry his deceased grandfather’s wife if his grandfather did not consummate the marriage with her before his death?
Wa Alaikum As Salaam
Bismillahi wa billahi At Tawfeeq
No, a man cannot marry the legally wedded wife of his grandfather, even if they never consummated their marriage.
Fatawa Hindiyyah 1/302 Darul kutub Ilmiyyah
And Allah knows best.
Mufti Waheeb Saiyed
This answer was collected from DarulUloomTT.net, which is operated under the supervision of Mufti Waseem Khan from Darul Uloom Trinidad and Tobago.