قَالَ مُوسَى لِقَوْمِهِ اسْتَعِينُوا بِاللّهِ وَاصْبِرُواْ
إِنَّ الأَرْضَ لِلّهِ يُورِثُهَا مَن يَشَاء مِنْ عِبَادِهِ وَالْعَاقِبَةُ لِلْمُتَّقِينَ
“Musa said to his people, ‘Seek help of Allah and be firm. Verily the earth belongs to Allah. He gives it for inheritance to whom He pleases among His servants. And the (good) end is for the pious ones”
Imam Baqir (as) said, We found the following written in the book of Ali (as), “Verily the earth belongs to Allah. He gives it for inheritance to whom He pleases among His servants. And the (good) end is for the pious ones” .
My family and I are those who have inherited the earth and we are “the pious ones.” All of the land belongs to us. Therefore, those of you who have access to any Muslim land should develop it and give the land tax to the Imam from my family; it is permissible to use the remainder of the earnings for living expenses.
However, (if someone who has access to a land) leaves it unattended or undeveloped, and then another Muslim gains control of this land after him, and then cultivates the land and develops it, then he will have more rights on this land than the man who abandoned it. He should give the land tax to the Imam from my family, and the remainder of the earnings can be used for living expenses until the reappearance of the Qaem (as), which will take place by sword.
On that day, he will take control of all of the land and will not give any land to anyone. He will revoke the land from the people, just as the Messenger of Allah (sawa) used to, except for the land that is in the hands of our Shia. The Qaem (as) will leave their land in their hands. (Al Kafi volume 1 page 407; Tafseer Ayyashi volume 2 page 24)