Hadithcore
Riyad as-Salihin, 1574

Abu Hurairah (May Allah be pleased with him) said:

The Messenger of Allah (ﷺ) said, "It is enough evil for a Muslim to look down upon his (Muslim) brother." <b>[Muslim]</b>.

وعن أبي هريرة رضي الله عنه أن رسول الله صلى الله عليه وسلم قال‏:‏ ‏

‏بحسب امرئ من الشر أن يحقر المسلم‏

‏‏.‏ ‏(‏‏(‏رواه مسلم، وقد سبق قريبًا بطوله‏)‏‏)‏‏.‏

References1 variant
In-Book Reference
Book 17, Hadith 64
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) A Muslim is strictly warned against despising his Muslim brother as it leads to undoing the bond of brotherhood between the Muslims.<br> 2) A Muslim is warned against the tremendous sin of despising his Muslim brother, which the Messenger of Allah (may Allah’s peace and blessings be upon him) referred to as a sign of gross evil.