The Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, narrated from Abu Al-Qasim Ja'far ibn Muhammad, from his father, from Sa'd ibn Abdullah, from Ahmad ibn Al-Hasan ibn Ali ibn Faddal, from Amr ibn Sa'id, from Musaddiq ibn Sadaqah, from Ammar Al-Sabati, from Abu Abdullah عليه السلام. Imam عليه السلام said: "Everything whose meat is permissible to eat, there is no harm in what comes out of it."