Narrated to me by the Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, who said: Abu Al-Qasim Ja'far bin Muhammad narrated to me, from Muhammad bin Ya'qub, from Ali bin Ibrahim, from his father, from Hammad, from Hariz, from Muhammad bin Muslim, who said: I said to Abu Ja'far عليه السلام: 'A man urinates and does not have water with him.' Imam عليه السلام said: 'He should squeeze the base of his penis to its tip three times, and then shake its tip. If anything comes out after that, it is not urine but rather from the habail (natural secretions or residual moisture).'