Surah Al-Baqarah (2:279)

فَاِنۡ لَّمۡ تَفۡعَلُوۡا فَاۡذَنُوۡا بِحَرۡبٍ مِّنَ اللّٰهِ وَرَسُوۡلِهٖۚ وَاِنۡ تُبۡتُمۡ فَلَـكُمۡ رُءُوۡسُ اَمۡوَالِكُمۡۚ لَا تَظۡلِمُوۡنَ وَلَا تُظۡلَمُوۡنَ‏ ۝

Fa-in lam tafAAaloo fa/thanoo biharbinmina Allahi warasoolihi wa-in tubtum falakum ruoosu amwalikumla tathlimoona wala tuthlamoon

And if you do not, then be informed of a war against you from Allāh and His Messenger. But if you repent, you may have your principal - thus you do no wrong, nor are you wronged.

Tadabbur (Reflection)

Theme of the Ayat

The Declaration of War: God and His Messenger fight the consumers of interest.

The Insight

Failure to abandon Riba results in a declaration of war from God and His Messenger. Recognize the ultimate enemy. Few sins incur a direct declaration of war from the Creator. View Riba not as a market mechanism, but as an existential spiritual danger that opposes God's law.