Sahih-i Buhari #24
Sahih (Authentic)
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)
Rivayet Zinciri (İsnad)
Narrated 'Abdullah (bin 'Umar)