It is narrated on the authority of Abu Huraira that the Prophet (ﷺ) said
Iman has over seventy branches, and modesty is a branch of Iman.
It is narrated on the authority of Abu Huraira that the Messenger of Allah (may peace and blessings be upon him) said
Faith has over seventy branches or over sixty branches, the most excellent of which is the declaration that there is no god but Allah, and the humblest of which is the, removal of what is injurious from the path: and modesty is the branch of faith.
Salim reported on the authority of his father that the Prophet (may peace and blessings be upon him) heard a man censuring his brother regarding modesty. Upon this the Prophet remarked
Modesty is part of Iman (faith).
Zuhri has narrated this hadith with the addition of these words
He (the Holy Prophet) happened to pass by a mass of Ansar who was instructing his brother (about modesty).
It is narrated on the authority of 'Imran b. Husain that the Prophet (may peace and blessings be upon him) said
Modesty brings forth nothing but goodness. Bushair b. Ka'b said: It is recorded in the books of wisdom, there lies sobriety in it and calmness of mind in it, Imran said: I am narrating to you the tradition of the Messenger of Allah (may peace and blessings be upon him) and you talk of your books.
It is narrated on the authority of Qatada. We were sitting with 'Imran b. Husain in a company and Bushair ibn Ka'b was also amongst us. 'Imran narrated to us that on a certain occasion the Messenger of Allah (may peace and blessings be upon him) said
Modesty is a virtue through and through, or said: Modesty is a goodness complete. Upon this Bushair ibn Ka'b said: Verily we find in certain books or books of (wisdom) that it is God-inspired peace of mind or sobriety for the sake of Allah and there is also a weakness in it. Imran was so much enraged that his eyes became red and he said: I am narrating to you the hadith of the Messenger of Allah (ﷺ) and you are contradicting it. He (the narrator) said: Imran reported the hadith, He (the narrator) said: Bushair repeated, (the same thing). Imran was enraged. He (the narrator) said: We asserted: Verily Bushair is one amongst us. Abu Nujaid! There is nothing wrong, with him (Bushair). Ishaq b. Ibrahim narrates this hadith of the Prophet on the authority of Imran b. Husain, like the one narrated by Hammad b. Zaid.