Sahih al-Bukhari 24
Sahih Book of Belief · Hadith 24 of 7,563حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، قَالَ أَخْبَرَنَا مَالِكُ بْنُ أَنَسٍ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم مَرَّ عَلَى رَجُلٍ مِنَ الأَنْصَارِ وَهُوَ يَعِظُ أَخَاهُ فِي الْحَيَاءِ، فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " دَعْهُ فَإِنَّ الْحَيَاءَ مِنَ الإِيمَانِ ".
Narrated by Abdullah (bin 'Umar)
Once Allah's Messenger (ﷺ) passed by an Ansari (man) who was admonishing his brother regarding Haya'. On that Allah's Messenger (ﷺ) said, "Leave him as Haya' is a part of faith." (See Hadith)
References
Sahih al-Bukhari 24
In-book: Book 2, Hadith 17 Source: hadith-api (fawazahmed0)