I say, and with God's guidance: It becomes valid for ablution; because the condition is the water reaching the parts of ablution, and that has occurred. The intention in ablution is a Sunnah and it is not a condition for the validity of ablution, so the validity of ablution does not depend on the intention; because the nature of water is to remove and purify, and its use necessitates the attainment of purity even in the absence of intention. Refer to: Sharh Al-Wiqayah, pp. 82-83, and Fath Bab Al-Inayah 1: 55, and God knows best.