You are not obligated to cancel the Sale if you fulfilled the Conditions
Question :
I sold my car to someone and the agreement was finalized concerning its price. However, he gave me 700 riyals to keep the car with me until he could pay the rest of the price. Then, after about half a month, he came to me seeking to cancel the sale and get the money back that he previously paid for it. So, I refused to do that. Does he have the right to request this and what am I required to do now?
Answer:
If you respond positively to his request and return his money to him, that is better, and you will have a great reward with Allâh. This is due to the Prophet's statement:
"Whoever remits to a Muslim his sale, Allâh will remit for him his mistakes."
In reference to what is required, you are not required to remit it if the considered conditions of the sale had been met legally. And Allâh is the Giver of success.
Source:
Ash-Shaykh Ibn Baz
Fatawa Islamiyah, Vol. 4 Page 388
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