Mujahid narrates from a man of the tribe of Thaqif, who narrates from his father, that he said: I saw the Prophet (peace and blessings be upon him) urinate, then he (peace and blessings be upon him) sprinkled water on his private part.
(b) In the narration of Mansur and Ibn Abi Najih (may Allah have mercy on them both), they relate this hadith and say: Then he (peace and blessings be upon him) performed ablution and sprinkled water on his private part.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 754