The author of this book, may Allah سبحانه وتعالى have mercy on him, explained that this applies after it is confirmed that neither his life nor death is known, and there is no knowledge of his whereabouts. After a search has been conducted in all four directions for four years without any information about his life or death, at that point, his wife observes the waiting period (iddah) of a woman whose husband has passed away. Then, his wealth is distributed among his heirs according to the shares and obligations prescribed by Allah سبحانه وتعالى, the Mighty and Majestic.