(23) باب فِي بَيْعِ الثِّمَارِ قَبْلَ أَنْ يَبْدُوَ صَلاَحُهَا
Narrated Anas ibn Malik:
The Prophet (ﷺ) forbade the sale of grapes till they became black and the sale of grain till it had become hard.
Reference: Sunan Abi Dawud 3371
In-book reference: Book 23, Hadith 46
English translation: Book 22, Hadith 3365