It is permissible to will any amount without any limit to anybody. However, if the will pertains to a third of the inherited wealth or less, it is implemented. If it is more than a third, then the excess of the third is not implemented without the permission of the inheritors.
They are not allowed to inform about metaphysical issues with certainty based on their sources; also, it is not permitted to believe them.
Adalah – as a condition in the imam of the congregational prayer and in the witness – is a level of fearing Almighty Allah that leads to avoiding the committing of major sins. Committing small sins without insistence does not affect it. Adalah – as a condition in the marja – is a high level of God-fearing which leads the person to refraining from disobeying the religious laws and committing sins – whether the sins are small or major. If on the rare occasion he commits a sin, he would rush to repent to Almighty Allah and seek his forgiveness. A person who holds 'adālah is called "adil".
This topic entails a detailed discussion, but in summary Allah said: “And if, when they had wronged themselves, they had but come unto thee and asked forgiveness of Allah, and asked forgiveness of the messenger, they would have found Allah Forgiving, Merciful” (4:64). It is clear that the intercession of the Prophet (peace be upon him and his progeny) is one of the causes of divine mercy and forgiveness, and there is no evidence that this is limited to his life, especially with the traditions narrated from him that indicate that he replies to our salutations and greetings to him after his death; so just as salutations reach him after his death, so do our requests for his intercession.