"...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)

"Narrated 'Abdullah bin 'Umar : The Jew brought to the Prophet a man and a woman from amongst them who have committed (adultery) illegal sexual intercourse. He ordered both of them to be stoned (to death), near the place of offering the funeral prayers beside the mosque." - Sahih Bukhari 7:62:64 (read more)

"Oh Allah, take your enemies, the enemies of Islam. Oh Allah, take the Jews, the treacherous aggressors. Oh Allah, take this profligate, cunning, arrogant band of people. Oh Allah, they have spread much tyranny and corruption in the land. Pour Your wrath upon them, oh our God. Lie in wait for them... Oh Allah, take this oppressive, Jewish, Zionist band of people. Oh Allah, do not spare a single one of them. Oh Allah, count their numbers, and kill them, down to the very last one." - Yusuf al-Qaradawi