3. Muhammad ibn Yahya has narrated from ‘Umrah ibn Musa from Musa ibn Ja‘far from ‘Amr ibn Sa‘id al-Mada’ini from abu ‘Ubayda al-Mada’ini from abu ‘Abdallah عليه السلام who has said the following. “When the Imam عليه السلام would will to know something Allah will grant him such knowledge.”