Do places that have been stepped on become impure after walking on rainwater accumulated in the courtyard of a house, the purity of which has not been ascertained after urine was splattered on it and it was washed?

The questioner is afflicted with waswas (obsessive doubts) regarding impurity (najasa). The places he passed through do not become impure. Washing the feet from the traces of urine is sufficient, and certainty about their purity is not a condition; rather, the predominance of belief is enough, because demanding certainty in this case would be a hardship. His action of washing the stairs and the courtyard was unnecessary. Rain purifies an impure place and does not spread the impurity. One must fear Allah and not succumb to waswas.