when two witnesses have borne testimony concerning a right owed by Zayd, then one of them gives his testimony and the second is asked to testify, but says to the claimant: “Your oath together with the witness is sufficient, for judgment may be given in financial matters on the basis of one witness and an oath.” Is it lawful for the second witness to say to the claimant, “You have a witness, so swear along with him, and judgment will be given in your favor on the basis of your oath”? We say: It is not lawful for him to refrain from giving testimony, due to the general import of Allah’s saying: “Whoever conceals it, his heart is indeed sinful” [al-Baqarah: 283].
There is also another condition which the author did not mention: the testimony must be acceptable to the judge. If it is not acceptable, then he is not required either to undertake the testimony or to give it. Thus, if a father asks his son to testify concerning a right owed to him, the son is not required to testify for him, because his testimony is not accepted by the judge; a child’s testimony in favor of his father is not accepted. The reverse likewise applies: if the son says to his father, “Come and testify,” the father is not required to testify, because his testimony is not accepted. Thus, there is no benefit in such testimony.
Similarly, if a person is known for open sin, and the judge will reject his testimony—for example, one who shaves his beard, where this judge is known to reject the testimony of one who shaves his beard—and someone comes to him and says, “Come and testify,” is he required to do so or not? He is not required to do so. If the claimant says to him, “Come and testify,” he may say, “I am not required to do so, because if I testified before the judge, he would not accept me, since I shave my beard.” The claimant may then say to him, “Testify; perhaps Allah will grant you repentance and you will let your beard grow.” Would he then be required to do so? The answer is that this is possible, and we say: he is obliged to let his beard grow, whether his testimony is accepted or not. But this man does not let his beard grow, so perhaps we may say: if the testimony is immediate, such that if a person were to repent, he would not