Sunan an-Nasa'i, Book 47, Hadith 21 (In-Book) ⓘ
It was narrated that Abu Hurairah said: "The Messenger of Allah [SAW] said: 'Faith has seventy-odd branches, the most virtuous of which is La ilaha illallah (there is none worthy of worship except Allah) and the least of which is removing something harmful from the road. And modesty (Al-Haya') is a branch of faith.'"
أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ، قَالَ حَدَّثَنَا أَبُو دَاوُدَ، عَنْ سُفْيَانَ، قَالَ وَحَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ سُهَيْلٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " الإِيمَانُ بِضْعٌ وَسَبْعُونَ شُعْبَةً أَفْضَلُهَا لاَ إِلَهَ إِلاَّ اللَّهُ وَأَوْضَعُهَا إِمَاطَةُ الأَذَى عَنِ الطَّرِيقِ وَالْحَيَاءُ شُعْبَةٌ مِنَ الإِيمَانِ " .
also referenced under: Hadith 5005 (Reference) & Volume 6, Book 47, Hadith 5008 (DarusSalam)