Do not overeat; that invites disease.
Forgive people so that Allah may forgive you.
Learn the Arabic language; it will sharpen your wisdom.
Don't forget your own self while preaching to others.
Do not be fooled by one who recites the Qurân. His recitation is but speech – but look to those who act according to it.
Renouncing the worldly pleasures is a comfort for both the human heart and body.