Criminal Trial–Cause of death–Death certificate showing the cause of death cardiac attack–Post mortem report showing the reason of death asphyxia on account of smothering–Post mortem was conducted after five days of death–Tentative reasons of death were shown in post-mortem report–Doctor admitted that such type of contusion could be caused if that portion of the body comes in contact with a rough and hard surface–Presence of alcohol in the body–Deceased was treated for hypertension and depression–Absence of clear certainly about the cause of death–Appellant-accused is entitled for getting the benefit of the doubt.