ما هو الحلال والحرام في البيع والشراء؟

The question cannot be answered with a fatwa, because Allah has permitted trade. However, a sale may deviate from its original permissibility if there is gharar (excessive uncertainty), jahalah (ignorance), or riba (interest). Due to the numerous forms these issues can take, the enquirer is advised to study the chapter on sales from reliable sources or to frequently consult scholars, and to send specific issues that have become unclear to them.