كتاب الإيمان
1  
The Book of Faith
(12)
Chapter: Clarifying the number of branches of faith, the best and the least of them, the virtue of modesty (Al-Haya') and the fact that it is part of faith
(12)
باب بَيَانِ عَدَدِ شُعَبِ الْإِيمَانِ وَأَفْضَلِهَا وَأَدْنَاهَا وَفَضِيلَةِ الْحَيَاءِ وَكَوْنِهِ مِنْ الْإِيمَانِ
Sahih Muslim 37 b

It is narrated on the authority of Qatada. We were sitting with 'Imran b. Husain in a company and Bushair ibn Ka'b was also amongst us. 'Imran narrated to us that on a certain occasion the Messenger of Allah (may peace and blessings be upon him) said:

Modesty is a virtue through and through, or said: Modesty is a goodness complete. Upon this Bushair ibn Ka'b said: Verily we find in certain books or books of (wisdom) that it is God-inspired peace of mind or sobriety for the sake of Allah and there is also a weakness in it. Imran was so much enraged that his eyes became red and he said: I am narrating to you the hadith of the Messenger of Allah (ﷺ) and you are contradicting it. He (the narrator) said: Imran reported the hadith, He (the narrator) said: Bushair repeated, (the same thing). Imran was enraged. He (the narrator) said: We asserted: Verily Bushair is one amongst us. Abu Nujaid! There is nothing wrong, with him (Bushair).
حَدَّثَنَا يَحْيَى بْنُ حَبِيبٍ الْحَارِثِيُّ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ إِسْحَاقَ، - وَهُوَ ابْنُ سُوَيْدٍ - أَنَّ أَبَا قَتَادَةَ، حَدَّثَ قَالَ كُنَّا عِنْدَ عِمْرَانَ بْنِ حُصَيْنٍ فِي رَهْطٍ مِنَّا وَفِينَا بُشَيْرُ بْنُ كَعْبٍ فَحَدَّثَنَا عِمْرَانُ، يَوْمَئِذٍ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ الْحَيَاءُ خَيْرٌ كُلُّهُ ‏"‏ ‏.‏ قَالَ أَوْ قَالَ ‏"‏ الْحَيَاءُ كُلُّهُ خَيْرٌ ‏"‏ ‏.‏ فَقَالَ بُشَيْرُ بْنُ كَعْبٍ إِنَّا لَنَجِدُ فِي بَعْضِ الْكُتُبِ أَوِ الْحِكْمَةِ أَنَّ مِنْهُ سَكِينَةً وَوَقَارًا لِلَّهِ وَمِنْهُ ضَعْفٌ ‏.‏ قَالَ فَغَضِبَ عِمْرَانُ حَتَّى احْمَرَّتَا عَيْنَاهُ وَقَالَ أَلاَ أُرَانِي أُحَدِّثُكَ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم وَتُعَارِضُ فِيهِ ‏.‏ قَالَ فَأَعَادَ عِمْرَانُ الْحَدِيثَ قَالَ فَأَعَادَ بُشَيْرٌ فَغَضِبَ عِمْرَانُ قَالَ فَمَا زِلْنَا نَقُولُ فِيهِ إِنَّهُ مِنَّا يَا أَبَا نُجَيْدٍ إِنَّهُ لاَ بَأْسَ بِهِ ‏.‏
Reference : Sahih Muslim 37b
In-book reference : Book 1, Hadith 64
USC-MSA web (English) reference : Book 1, Hadith 60
  (deprecated numbering scheme)