(14) باب بَيَانِ تَفَاضُلِ الإِسْلاَمِ وَأَىِّ أُمُورِهِ أَفْضَلُ
It is narrated on the authority of Abu Musa Ash'ari:
I asked the Messenger of Allah which (attribute) of Islam is more excellent. Upon this he remarked: One in which the Muslims are safe, protected from the tongue and hand of (other Muslims).
Reference: Sahih Muslim 42 a
In-book reference: Book 1, Hadith 70
USC-MSA web (English) reference(deprecated numbering scheme): Book 1, Hadith 66