VERILY, [O you who believe in Me,] this community of yours is one single community, since I am the Sustainer of you all: worship, then, Me [alone]!
Al-Anbiya (The Prophets) Verse 92
The Prophet said, "The most hated person in the sight of Allah is the most quarrelsome person."
Sahih Bukhari: Volume 3, Book 43, Number 637