The victory of Qadisiyyah heralded the downfall of the Sasanian Dynasty,
paved the way for the conquest of Iraq and quickened Islamic expansion
into Persia (Iran) and beyond. The Iranians had 240,000 troops, but the
Muslims with about 30,000 soldiers still drove the Iranian Empire, one
of the superpowers of the day, into the ground.
At Al-Qadisiyyah, the Muslims were able to break the Persian might,
dealing them a blow from which they would never recover. The Battle of
Al-Qadisiyyah is therefore one of the most decisive battles in the
history of humanity.