Riyad as-SalihinChapter 1Hadith 1
Full Sharh — Riyad as-Salihin 1
وعن ابن عمر رضي الله عنهما أن رسول الله صلى الله عليه وسلم مر على رجل من الأنصار وهو يعظ أخاه في الحياء، فقال رسول الله صلى الله عليه وسلم: "دعه فإن الحياء من الإيمان" ((متفق عليه)) .
English Translation
Ibn 'Umar (May Allah be pleased with them) reported:: Messenger of Allah (ﷺ) passed by a man of the Ansar who was admonishing his brother regarding shyness. Messenger of Allah (ﷺ) said, "Leave him alone, for modesty is a part of Iman." .
Source
Riyad as-Salihin(رياض الصالحين)
The Book of Good Manners
Hadith Number
1