Sahih Al Bukhari Volume 2 Belief. Hadith number 8.

Narrated by Abu Huraira Razi ALLAH Tala Anhu
The Prophet said, "Faith (Belief) consists of more than sixty branches (i.e. parts). And Haya (This term "Haya" covers a large number of concepts which are to be taken together; amongst them are self respect, modesty, bashfulness, and scruple, etc.) is a part of faith."
This hadith is attributed to Prophet Muhammad (peace be upon him) and is reported by Abu Huraira Razi ALLAH Tala Anhu, one of the companions of the Prophet. The saying emphasizes the comprehensive nature of faith (Iman) by stating that it consists of more than sixty branches or parts. The term "Haya" is mentioned as one of these branches, and it is explained to cover various concepts such as self-respect, modesty, bashfulness, and scruple.
This hadith highlights the multifaceted nature of faith, suggesting that it encompasses various aspects of a believer's character and behavior. "Haya" is particularly singled out as an integral part of faith, underscoring the importance of qualities like modesty, humility, and a sense of shame or scruple in the practice of one's faith.
It's worth noting that hadiths are sayings of Prophet Muhammad (Peace Be Upon Him), and they are an important source of guidance for Muslims, alongside the Quran. Scholars scrutinize the chain of narrators and the content of hadiths to determine their authenticity and applicability to Islamic teachings.