Repaying a loan in a foreign currency
Q: Zaid is in Dubai. Aslam, from Pakistan, is in need of some loan. Zaid does not have a foreign currency account in Pakistan, so when Zaid transfers 2000 dirhams to Aslam, Aslam receives Pakistani rupees equivalent to 2000 dirhams. After one year, the Pakistani rupee value has dropped, now will Aslam return the same amount 2000 dirhams or Pakistani rupees that he received a year back? Or should he return the rupees equivalent to current value of 2000 dirhams?