Abu Hurairah (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings of Allah be upon him) forbade muhaqala and muzabana. Imam Tirmidhi says:
1- The hadith of Abu Hurairah (may Allah be pleased with him) is hasan sahih,
2- In this chapter, hadiths have also been narrated from Ibn Umar, Ibn Abbas, Zaid bin Thabit, Sa’d, Jabir, Rafi’ bin Khadij, and Abu Sa’id (may Allah be pleased with them),
3- Selling standing crops of ears in exchange for wheat is called muhaqala, and selling dates on the tree in exchange for plucked dates is called muzabana,
4- Most of the people of knowledge act upon this. They consider muhaqala and muzabana to be disliked.