Is it permissible for the eldest brother, who has managed his deceased father's estate since 1985, to dispose of the estate by preventing his sisters from receiving their in-kind share of the land and replacing it with money calculated at the price of agricultural land instead of building land? Is it permissible for him to allocate a portion of the estate to pay off a debt he incurred, or to consider that part of his management fee? Is it permissible for him to allocate an additional portion of the estate to himself for his management and to assign a private car to himself? Is he entitled to allocate an extra share to his two brothers for assisting him in the management, despite their receiving salaries, or pursuing their studies, or being employed? Is the estate to be divided at its current value or at its value at the time of death? And how are the estate's profits calculated for the period after the marriage and education of the siblings, without the distribution of profits?