Jami` at-Tirmidhi 2615
جامع الترمذي#2615SahihNarrated Ibn 'Umar:that the Messenger of Allah (ﷺ) passed by a man and he was chastising his brother about modesty, so the Messenger of Allah (ﷺ) said: "Al-Haya' is part of faith
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 40:10