As it is impermissible for a lender

A: It is obligatory on him to just give you back the amount he raised from the sale of the land that he borrowed from you, without an increase, because stipulating an increase on a loan is clear Riba (usury/interest). (Part No. 14; Page No. 135) Allah (Glorified and Exalted be He) prohibited Riba in many Qur’anic Ayahs (verses). The Prophet (peace be upon him) also prohibited Riba and cursed those who receive Riba, those who pay it, the two witnesses to it, and those who record it. Therefore, you should only receive the value of the land that your friend borrowed from you. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.