In the book Makarim al-Akhlaq by Tabarsi...

In the book Makarim al-Akhlaq by Tabarsi, Imam Sadiq (AS) has been reported as saying: “The least extravagance is to use extra water, to wear formal dress in working place and to throw away the stone of fruits.”[^12] The Imam has also been reported as saying: “The least extravagance is when your formal and casual clothes are the same.”[^13] Imam Sadiq (AS) has been reported as saying: “Luqman said to his son: ‘For an extravagant one, there are three signs: he buys what is not proper for him, wears what is not proper for him, and eats what is not proper for him.”[^14] Imam Ali (AS) has been reported as saying: “One shall not experience the truth of faith unless he has three features; knowledge in faith, patience with calamities, and moderation in living.”[^15] As for the second feature, that is to be humble, there are many verses and traditions about it.

Being humble is a praiseworthy feature in the same way that arrogance is blameworthy, whether it is before God, before the Messenger of Allah or before people. Satan had been cast out of paradise because of his arrogance, despite the long years of his worship. Nations faced misfortunes because of arrogance. They used to say: Shall we believe in human beings who are like us ourselves? or they challenged scholars and admonishers.

They considered perfections for themselves when it is said to them: “And when it is said to him: guard against (the punishment of) Allah; pride carries him off to sin.” [^16] Allah says in the Qur'an that Luqman said to his son: “And do not turn your face away from people in contempt, nor go about in the land exulting overmuch; surely Allah does not love any conceited boaster.” [^17] God has also said: “And do not go about in the land exultingly, for you cannot cut through the earth nor reach the mountain in height.” [^18] About the pious, who are real believers, God says: “O you who believe!