If the wife is pregnant at the time of her husband’s death then she cannot marry until she gives birth to the child. But if she is not pregnant then her death iddah shall be four months and ten days. After this she can marry any other man. After the death of husband when iddah is over, the widow can marry with the bhanja of her husband.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband