‘Auf b. Malik told that the Prophet gave a decision between two men and that when the one against whom the decision had been given turned away he said, “My sufficiency is God, and good is the Guardian." Thereupon the Prophet said, “God most high blames for falling short, hut apply intelligence, and when a matter gets the better of you say, 'My sufficiency is God, and good is the Guardian’. (Al-Qur’an, 3:173)
‘Amr b. Shu'aib, on his father’s authority, told that his grandfather reported the Prophet as saying, “The testimony of a deceitful man or woman, or of an immoral man or woman, or of one who harbours rancour against his brother is not allowable," and he rejected the testimony of one who is dependent on a family.