4. Humayd ibn Ziyad has narrated from al-Hassan ibn Muhammad ibn Sama‘ah, from certain persons of his people from Aban from a man who has narrated the following: “This is about the case of a man who claims to have a right on another man but does not have any testimony. Abu ‘Abd Allah عليه السلام, has said, ‘He can ask the defendant to take an oath, but if he declines and asks the plaintiff to take an oath, then it is obligatory on him to take an oath to receive his right.’”