"...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 Anas bin Malik: While we were sitting with the Prophet in the mosque, a man came riding on a camel. He made his camel kneel down in the mosque, tied its foreleg and then said: "Who amongst you is Muhammad?" At that time the Prophet was sitting amongst us (his companions) leaning on his arm. We replied, "This white man reclining on his arm." They then addressed him" - Sahih Bukhari 1:3:63 (read more)

"...the Messenger of Allah (may Allah bless him and grant him peace) used to go out on military expeditions or send out an army at least every two months. The virtuous Companions continued upon the path of the Noble Prophet (may Allah bless him and grant him peace), for the Glorious Qur'an had brought up this generation with an education of Jihad. They had been bathed in Jihad and cleansed of engrossment in worldly matters, just as a wound is bathed in water." - Imam Abdullah Azzam