It is narrated from Hazrat Sufyan or Hakam (may Allah be pleased with him) that once I saw that the Prophet (peace and blessings be upon him) urinated, then performed ablution and sprinkled some water on his private part.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 23469
Hadith Gradingحکم دارالسلام:حديث ضعيف لاضطرابه، اضطرب فيه منصور عن مجاهد ألوانا، وقد اختلف فى صحبة الحكم