Allah (Exalted be He) sent His Messenger Muhammad (peace be upon him) with the guidance and the true religion. He made His Shari`ah (Islamic Law) suitable for all people, and perfect and eternal until the Day of Resurrection. Allah (Glorified be He) is All-Knowing of what was and what will be and the changes in the conditions of people, the value of money, and people's need for money and their benefit from it until the Day of Judgment. It is Allah (Glorified be He) Who revealed to His Messenger (peace be upon him) how to define the Nisab of Zakah on wealth, and how much should be given to those who have a right to it. As Allah says in the Qur'an:
As-Sadaqât (here it means Zakât) are only for the Fuqarâ’ (poor), and the Masâkin (needy)
So if the Nisab and the amount of money paid as Zakah changed with the change in time, people's conditions, and the value of money, Allah (Glorified be He) would have explained this and revealed the different rules to suit these conditions to His Messenger (peace be upon him) (Part No. 9; Page No. 199) out of mercy to His Servants; but he did not do this, and He is the All-Wise, the Most Compassionate, and Merciful. This shows that
the Nisab of Zakah, the amount of money paid as Zakah and the recipients of Zakah, as defined by the Shari`ah, will not change with the passage of time until the Day of Resurrection.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.