The Source of Traditions on Imam al-Riḍā (Vol 2) · Hadith 87 (#Ḥadīth #87)
Chapter 1 | Traditions about Ar-Ridha
87 - وَبِهذَا الإِسنادِ عَنْ عَلِىِّ بْنِ أَبِي طالِب عَلَيْهِالسَّلامُ أَنَّهُ قالَ: عَلَيْكُمْ بِالقَرعِ فَإِنَّهُ يَزِيدُ في الدِّماغِ.
31-87 According to the same documentation, Ali ibn Abi Talib said, “When you cook use a lot of gourds since it strengthens mental powers.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).