Does zakat become obligatory on the amount returning from the sale of the wife's gold, deposited in an Islamic savings account, if a year passes over it, especially if the wife no longer possesses gold? And does zakat become obligatory on an amount saved for purchasing essential life necessities like a refrigerator, washing machine, and furniture, if it reaches the nisab and a year passes over it, given the current inability to purchase due to the siege? And how is the zakat calculated for gold that was purchased with the intention of saving for $3000, then its value increased to $3500 before the completion of the year on the original amount; is zakat paid only on the original value, or on the total value, or are the profits' zakat separated?