4. A number of our people have narrated from Sahl ibn Ziyad from Ahmad ibn Muhammad from ibn abu Nasr from ‘Abd Allah ibn Muhammad al-Shamiy from al-Husayn ibn Hanzalah who has said the following: “One of the two Imam, (abu Ja‘far or abu ‘Abd Allah), ‘Alayhim al-Salam, has said, ‘Gourd, squash increases al-Damagh (abilities of the brain).”’