THE QUBA MOSQUE OF MADINA
Never stand you therein. Verily, the mosque whose foundation was laid from the first day on piety is more worthy that you stand therein (to pray). In it are men who love to clean and purify themselves. Allah loves those who make themselves clean and pure (i.e. who clean their private parts with dust (which has the properties of soap) and water from urine and stools, after answering the call of nature.)
