"...If the party liable is mentally deficient, or weak, or unable Himself to dictate, Let his guardian dictate faithfully, and get two witnesses, out of your own men, and if there are not two men, then a man and two women, such as ye choose, for witnesses, so that if one of them errs, the other can remind her. The witnesses should not refuse when they are called on (For evidence)." - Quran 2:282 (read more)

"O Allah's Apostle! We asked you for mounts, but you took an oath that you would not give us any mounts; we think that you have forgotten your oath.' He said, 'It is Allah Who has given you mounts. By Allah, and Allah willing, if I take an oath and later find something else better than that. then I do what is better and expiate my oath.'" - Sahih Bukhari 7:67:427 (read more)

"[Jews and Christians] should be forced to pay Jizyah in order to put an end to their independence and supremacy so that they should not remain rulers and sovereigns in the land. These powers should be wrested from them by the followers of the true Faith, who should assume the sovereignty and lead others towards the Right Way, while they should become their subjects and pay jizyah." - Sayyid Abul Ala Maududi