Believers are modest from the heart:
One of the most important conditions of faith is modesty. A verse in the Qur’an reads: "The people who truly do believe in Our signs are those who fall to the ground prostrating when they are reminded of them, and glorify their Lord with praise, and are not arrogant" (Surat as-Sajda, 15). Believers are constantly aware that Allah does not love anyone who is vain or boastful, therefore they are always modest.
The morality of Islam entails submission to Allah, and submission entails acknowledgement of one's weaknesses. Believers, who recognise that everything belongs to Allah, and that they themselves are weak and in need of Him, also act modestly towards Allah's other faithful servants. Being arrogant is contrary to faith, and the Messenger of Allah (saas) tells the believers to be humble and to treat each other like brothers in a hadith:
