Is a person considered sinful if he did not receive his baby girl who died after a Caesarean birth in the eighth month and her death a week later in the incubator, and he did not pray over her or bury her, and he does not know where she was buried? And what should someone in this situation do?

If a child is born alive and lives for a week, then it is obligatory to wash, pray over, and bury him or her like any other deceased person. The responsibility for this falls on the guardian (the father), and he incurs sin by neglecting it. However, there is no harm in relying on the hospital staff if they carry out these duties. It is advisable to frequently seek forgiveness, repent, and perform good deeds to expiate any shortcomings in preparing the daughter for burial. There is no need to search for her now, after years have passed since her death.