It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) forbade the sale of fruits before they ripen.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 5134
Hadith Gradingحکم دارالسلام:إسناده صحيح ، م : 1534 .