The question "What is the only fruit mentioned in the Quran?" is misleading because multiple fruits are mentioned. Therefore, a better question would be: "What are the fruits mentioned in the Quran?"
The Quran mentions several fruits, including:
- Figs: The reference specifies "Fig plant" as one of the fruits mentioned.
- Olives
- Grapes
- Pomegranate
- Banana
- Dates
Therefore, it is not possible to identify a single fruit as the only fruit mentioned in the Quran, because the Quran mentions multiple fruits.