Al-Kāfi - The Book of Food

ِنْ أَصْحَابِنَا عَنْ أَحْ٠َدَ بْنِ أَبِي عَبْدِ اللَّهِ عَنْ أَبِيهِ عَنْ بَعْضِ أَصْحَابِنَا عَنْ أَبِي الْحَسَنِ ٠ُوسَى ( عليه السلا٠) قَالَ كَانَ فِي٠َا أَوْصَى بِهِ رَسُولُ اللَّهِ ( صلى الله عليه وآله ) عَلِيّاً ( عليه السلا٠) أَنَّهُ قَالَ لَهُ يَا عَلِيُّ عَلَيْكَ بِالدُّبَّاءِ فَكُلْهُ فَإِنَّهُ يَزِيدُ فِي الدِّ٠َاغِ وَ الْعَقْلِ.

‘Of the things about which the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, recommended Ali (a.s.), was his saying, ‘O Ali, you must eat gourd, squash; it increases, al-Damagh, the abilities of the brain and the power of reason.’” رسل - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (22/217))