3. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Faddal from al-‘Ala’ ibn Razin from Muhammad ibn Muslim who has narrated the following: “Abu Ja’far عليه السلام, has said, ‘If a man hears a testimony but has not witnessed it, he has the choice to testify or remain silent, unless he knows that a rightful party suffers injustice, in which case it is not lawful to remain silent.’”