It is narrated from Sayyiduna Zaid bin Harithah (may Allah be pleased with him) that in the early days of revelation, Jibreel (peace be upon him) came to the Noble Prophet (peace and blessings be upon him and his family) and taught him ablution and prayer. When he finished ablution, he took a handful of water and sprinkled it over his private part.
It is narrated from Sayyiduna Usama bin Zaid (may Allah be pleased with him) that when Jibreel (peace be upon him) descended upon the Noble Prophet Muhammad (peace and blessings be upon him and his family), he taught him how to perform ablution. And when he finished the ablution, he took a handful of water and sprinkled it over his private part. Thus, the Noble Prophet Muhammad (peace and blessings be upon him and his family) would also sprinkle water in this manner after performing ablution.