Narrated on the authority of Ibn Umar (Ra) that the Prophet (ﷺ ) said: “If you deal in usury and hang onto the tails of cows, being satisfied with cultivation and ceasing to take part in Jihad, Allah will inflict a humiliation upon you which will not be removed until you return to your religion.” [Reported by Ahmad and Abu Dawud ]
We witnessed the truth behind this saying of our beloved Prophet(ﷺ) in the fall of Islamic Spain.
800 years of rule , Al-Andalus was a center of knowledge and learning.
Kordoba( the Capital ) alone had 200,000 houses, 600 mosques, 900 public baths, 10,000 lamps, 50 hospitals . This was when the streets of London and Paris where dark having no street lit.
Libraries and research institutions grew rapidly in Andulus , while the rest of Europe remained illiterate.
Muslim scholars published encyclopedias on medicine and astronomy including astrology, psychology, zoology, biology, botany, chemistry, physics, mathematics, algebra, geometry, trigonometry which Christian scholars acquired and translated.
Al Andulus produced cotton, paper, salt, silk, satin, pepper, stamps, clocks, soaps, rulers, maps, globes, furs, velvets and invented over 200 surgical instruments.
But when Muslims neglected commands of Allah and left the path of Jihad , Spain fell and the Islamic dignity vanished from the Iberian peninsula.