Hazrat Mahdi's (as) characteristics are mentioned in the holy books revealed to the Prophets

In the accounts, it is stated the the characteristics and the signs of the emergence of the Hazrat Mahdi (as) are mentioned in the books revealed to the prophets. It means that information about the Hazrat Mahdi (as) are heralded in the Gospel, Torah, Psalm and the formerly revealed pages and the books.

It is pointed out in the books on Prophets that, “Hazrat Mahdi’s (as) task is not cruelty and doing harm.” (Ibn Hajar al-Haythami, Al-Qawl al-Mukhtasar fi `Alamat al-Mahdi al-Muntadhar, p. 47)

I find Hazrat Mahdi (as) in the books of the Prophets as follows: Neither cruelty nor shame does exist in Hazrat Mahdi’s practices.” (Al-Muttaqi al-Hindi, Al-Burhan fi Alamat al-Mahdi Akhir az-Zaman, p. 21)

In the Qur’an it is revealed thus:
 

We wrote down in the Zabur, after the Reminder came: “It is MY RIGHTEOUS SERVANTS WHO WILL INHERIT EARTH.” (Surat al-Anbiya’, 105)
 

Islamic scholars interpret this verse as follows:

It is reported from Imam Baqir and Sadik that “the RIGHTEOUS SERVANTS here are HAZRAT MAHDI (AS) AND HIS COMPANIONS.” (Al-Hussayni al-Shirazi, p. 113)

In the Torah we find the following information:

A shoot will come up from the stump of Jesse; from his roots a Branch will bear fruit. The Spirit of the LORD will rest on him the Spirit of wisdom and of understanding, the Spirit of counsel and of power, the Spirit of knowledge and of the fear of the Lord and he will delight in the fear of the Lord. He will not judge by what he sees with his eyes, or decide by what he hears with his ears; but with righteousness he will judge the needy, with justice he will give decisions for the poor of the earth. He will strike the earth with the rod of his mouth; with the breath of his lips he will slay the wicked. Righteousness will be his belt and faithfulness the sash around his waist. The wolf will live with the lamb, the leopard will lie down with the goat, the calf and the lion and the yearling [a] together; and a little child will lead them. The cow will feed with the bear, their young will lie down together, and the lion will eat straw like the ox. The infant will play near the hole of the cobra, and the young child put his hand into the viper's nest. They will neither harm nor destroy on all my holy mountain, for the earth will be full of the knowledge of the LORD as the waters cover the sea. (Isaiah, 11:1-9)

In love a throne will be established; in faithfulness a man will sit on it one from the house [a] of David one who in judging seeks justice and speeds the cause of righteousness. (Isaiah, 16: 5)