Can the family benefit their deceased brother in the afterlife through good deeds, and is it permissible for his sister to fast on his behalf for the days of Ramadan he missed? And is seeing him in a dream dwelling in green gardens a sign of his entry into Paradise? And does a person feel the approach of their death before it occurs?

The deceased benefits from the deeds performed on their behalf, hoping for acceptance. If the deceased broke their fast in Ramadan due to an excuse, and this excuse persisted until their death, no compensatory fasts are due on their behalf, unless the illness was incurable, in which case food is given in expiation. However, if they broke their fast due to an excuse and died while still able to make up the fasts, their guardian should fast on their behalf. If they broke their fast out of negligence and carelessness, no compensatory fasts are valid on their behalf. The dream is a good dream, and its blessings are hoped for. "Nothing remains of the glad tidings of prophethood except the righteous vision which a Muslim sees or which is seen for him." We do not bear witness for any specific individual as being in Paradise or Hell, except for those whom the Sharīʿah has borne witness for. No one knows exactly when their appointed time will be. Allah Almighty says: "And no soul perceives what it will earn tomorrow, and no soul perceives in what land it will die. Indeed, Allah is Knowing and Acquainted."