Haya (Modesty) is the Distinguishing Character of Islam:
1. The Messenger of Allah, peace and blessings be upon him, said,
“Verily, every religion has a distinguishing characterist and the distinguishing characterist of Islam is modesty.”
(Sunan Ibn Mājah 4182 - Sahih li ghayrihi and Muwatta of Imam Malik)
2. Qurrah ibn Iyas reported: We were with the Messenger of Allah, peace and blessings be upon him, when modesty was mentioned to him. They said, “O Messenger of Allah, is modesty part of the religion?”
The Prophet said, “Rather, it is the entire religion.”
(Sunan al-Kubrá lil-Bayhaqī 20808 - Sahih)
3. “Modesty is part of faith and faith is in Paradise. Shamelessness is part of insolence and insolence is in Hellfire.”
(Sunan al-Tirmidhī 2009 - Sahih)
4. Imran ibn Husayn reported: The Prophet, peace and blessings be upon him, said, “Modesty does not bring anything but goodness.”
In another narration, the Prophet said, “Modesty is good in all things.”
(Ṣaḥīḥ al-Bukhārī 6117, Ṣaḥīḥ Muslim 37)
5. "Modesty is a branch of faith.”
(Ṣaḥīḥ al-Bukhārī 9, Ṣaḥīḥ Muslim 35)
6. “Allah loves modesty”
(Sunan al-Nasā’ī 406 - Sahih)
7. Abdullah ibn Mas’ud reported: The Messenger of Allah, peace and blessings be upon him, said, “Be modest before Allah, as is His right.” We said, “O Messenger of Allah, surely we have modesty, all praise is due to Allah!” The Prophet said, “It is not so. Rather, modesty before Allah, as is His right, is to guard the mind and what runs through it, to guard the stomach and what fills it, and to reflect upon death and trials. Whoever desires the Hereafter, let him abandon the embellishments of worldly life. Whoever does so has been modest before Allah, as is His right.”
(Sunan al-Tirmidhī 2458 - Hasan)