الرمان
A fruit mentioned in the Qur'an among the bounties of the earth, discussed by classical physicians as beneficial for the heart and blood.
مَا مِنْ رُمَّانَةٍ إِلَّا وَفِيهَا حَبَّةٌ مِنْ جَنَّةِ الْفِرْدَوْسِ
“There is no pomegranate that does not contain a seed from the pomegranates of Paradise.” (meaning, not a literal translation)
Pomegranate's stronger textual grounding comes from the Qur'an rather than this specific hadith — it's named twice among the fruits of paradise and earthly bounty (Surah Al-An'am 6:99, 6:141, and Surah Ar-Rahman 55:68), which is likely why this weaker hadith gained popular circulation alongside the fruit's genuine Qur'anic prominence.
Ibn al-Qayyim discusses pomegranate (sweet and sour varieties) within humoral medicine as beneficial for the heart, liver, and stomach depending on variety and ripeness. He distinguishes the sweet variety as more nourishing and the sour as more useful for settling an upset stomach or reducing fever, treating them as functionally different remedies despite coming from the same fruit.
Pomegranate has been fairly extensively studied in modern nutrition research for its antioxidant polyphenol content, with some studies examining cardiovascular markers. Research remains ongoing rather than fully conclusive on clinical outcomes. Noted here as separate modern context, not validation of the weakly-attested hadith above.