Al-Anfal (The Spoils of War)
Surah 8 · Verse 45
O you who believe! when you meet a group (of enemies) then be firm and remember Allah much that you may be successful.
Believers are ordered to keep Allah (SWT) in mind when they meet their enemies, not to boast or show off but to obey Allah (SWT) and His messenger (PBH). Mutual dispute is a major reason for weakness.



