I have purchased a goods in 100 tk and I sell this product 500 tk. I want to know this is halal or haram.
بسم الله الرحمن الرحيم
If you do not deceive or lie at the time of selling then it shall be lawful for you according to Shariah to sell the goods of 100 taka in 500 taka. And the profit shall also be halal for you.
Allah knows Best!
Darul Uloom Deoband