وَيَجُوزُ بَيْعُ الْحِنْطَةِ فِي سُنْبُلِهَا وَالْبَاقِلَّاءِ فِي قِشْرِهَا
Translation: It is permissible to sell wheat while still in its ears and broad beans while still in their pods.
Al-hintah is wheat; sunbul is its ear. Al-baqilla refers to broad beans, and qishr is their pod or enclosing covering.
The grain already exists but is held inside a natural covering. This is different from selling produce that does not yet exist.