(29) باب شِرَاءِ الثِّمَارِ قَبْلَ أَنْ يَبْدُوَ صَلاَحُهَا عَلَى أَنْ يَقْطَعَهَا وَلاَ يَتْرُكَهَا إِلَى أَوَانِ إِدْرَاكِهَا .
It was narrated from Anas bin Malik that:
the Messenger of Allah forbade selling fruits before they ripen. It was said: "O Messenger of Allah what does ripen mean?" he said: 'when they turn red." And the Messenger of Allah said: "What do you think if Allah withholds the fruits (causes it not to ripen), why would any one of you take his brother's wealth?"
Reference: Sunan an-Nasa'i 4526
In-book reference: Book 44, Hadith 78
English translation: Vol. 5, Book 44, Hadith 4530