It is related that al-Husayn bin Abd al-Rahmaan (rahimahullaah) said:

An abundance (excess) of food kills the heart just like excess water kills the plant. [He also said]: It used to be said, "Wisdom does not reside with a full stomach."

Mawsoo'ah Ibn Abi al-Dunyaa (4/96) through Hayat al-Salaf of Ahmad al-Tayyar.

Note:. Refer to previous articles (see here, here, here, and here).

Translated by Abu Iyaad (@abuiyaadsp)