Is zakat obligatory on the amount of 35,000 Saudi Riyals remaining from the sale of land that was purchased with a bank loan and then invested in stocks and lost, and how much is this zakat?

Zakat is obligatory on cash money if it reaches the nisab (minimum threshold) and a hawl (full lunar year) passes over it, whether it is for trade, savings, or to purchase a specific item, and regardless of whether its owner is in debt or exposed to loss. Thus, zakat is obligatory on the aforementioned amount at a rate of 2.5% after it reaches the nisab and a hawl has passed over it. However, if the mentioned money represents the value of shares after their decrease, then the matter refers to the detailed rulings on zakat for shares.