"...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)

"Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: The last hour would not come unless the Muslims will fight against the Jews and the Muslims would kill them until the Jews would hide themselves behind a stone or a tree and a stone or a tree would say: Muslim, or the servant of Allah, there is a Jew behind me; come and kill him; but the tree Gharqad would not say, for it is the tree of the Jews." - Sahih Muslim 41:6985 (read more)

"Due to the differences of both lives the Prophet (Sallallahu Alaihi wa Sallam) is not aware of what is going on in this world. He does not know who is asking help from him, and who is seeking child, wealth, wife, etc. ... On the other hand, if it is said that the Prophet (Sallallahu Alaihi wa Sallam) is alive in his grave, it does not mean that his life is similar to the life of those who are living in this world. So, if one seeks his help asks something from him he commits Shirk (polytheism)." - IslamWeb