What do the learned scholars say about the issue that a person named Zaid lent 10,000 rupees to Amr in the year 2000, whose purchasing power at that time was, for example, ten sacks of flour, and now Amr is repaying the loan to Zaid in the year 2007, purchasing power of which, for example, is five sacks of flour. Does Shariah allow Zaid to demand 15,000 rupees from Amr, whose purchasing power is 10 sacks of flour, or will he only take 10,000? While there is a clear difference between the previous value of 10,000 and the current value. Please answer. Jazakallah.
In the case of the questioner, he can only take from his debtor the amount of money that was given to him and it is certainly not permissible to take more than that particular amount according to Sharia law, as it falls under the rule of interest, and it must be avoided. Similarly, after lending, taking into account the purchasing power of the money while repaying, etc., is also like interest, and this should also be avoided.
وفي الدر المختار: (قوله بل وصف للذمة إلخ) ولهذا قيل إن الديون تقضى بأمثالها على معنى أن المقبوض مضمون على القابض لأن قبضه بنفسه على وجه التملك ولرب الدين على المدين مثله اھ (3/ 848)-