The following is the will of Imam Ali (a) in which he has left instructions as to how to treat his property and estate. It was written after his return from the Battle of Siffin.
This is what `Ali ibn Abi Talib, the slave of Allah has laid down about his property, in pursuance of seeking Allah's pleasure so that He may by virtue of it give him entry into Paradise and accord him peace.
It will be administered by Hasan ibn `Ali. He will take from it a suitable portion for his livelihood and spend it on charity. If something happens to Hasan, and Husayn survives he will adminster it after Hasan, and deal with it accordingly. In the charitable estate of the two sons of Fatimah they have the same rights as the all (other) sons of `Ali. I have laid down the (functions of) administration of the two sons of Fatimah in order to seek the pleasure of Allah and nearness to the Messenger of Allah (may Allah bless him and his descendants) with due regard for his honour and consideration of his kinship.
It is obligatory on him who administers it that he retains the estate as it is, and spends the usufruct as he has been ordered and instructed. He should not sell the seedlings in the plantations of these villages till the land changes its face by turning them into plants. As for those of my slave girls who were under me, if any one of them has a child or is pregnant, she will be retained for the sake of the child and will form part of his share. If the child dies and she survives, then she is free, bondage is removed from her and liberty is given to her.1
As-Sayyid ar-Radi says: In this will in Amir al-mu' minin's phrase "alla yabi`a min nakhliha wadiyyatan", the word "wadiyyah" means seedling of date-palm and its plural is "wadiyy". And his words "hatta tushkila arduha ghirasan",is one of the most eloquent form of expression and it means that when a number of date plants grow on the land then he who had seen it before the growth would regard it as a different land.