حَدَّثَنَا سُفْيَانُ عَنِ الزُّهْرِيِّ عَنْ سَالِمٍ عَنْ أَبِيهِ أَنَّهُ سَمِعَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَجُلًا يَعِظُ أَخَاهُ فِي الْحَيَاءِ فَقَالَ الْحَيَاءُ مِنْ الْإِيمَانِ
مسند امام احمد بن حنبل · Hadith 4554
It was narrated from Saalim from his father that the Prophet (PBUH) heard a man exhorting his brother to be modest, and he said: "Modesty is part of faith."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020