People will seek refuge in Hazrat Mahdi(pbuh) as honey bees cluster around their sovereign. He will fill the world that was once full of cruelty, with justice. His justice will be as such that he will not wake a sleeping person or EVEN SHED ONE DROP OF BLOOD. The earth will return to the age of happiness. (Al-Qawl al-Mukhtasar fi 'Alamat al-Mahdi al-Muntadhar, p.29 and 48)
Hazrat Mahdi (pbuh) will follow the way of the Prophet (may Allah bless him and grant him peace). HE WILL NOT WAKE UP A SLEEPING PERSON OR SHED BLOOD. (Al-Barzanji, Portents of Doomsday, p. 163)
No one will be woken up from their sleep, OR HAVE A BLEEDING NOSE. (Al-Qawl al-Mukhtasar fi 'Alamat al-Mahdi al-Muntazar, p. 44)
Those who swear allegiance to him [Hazrat Mahdi (pbuh)] will swear allegiance between the Corner and the Maqam [near the Kaaba]. They will not waken the sleeper, AND THEY WILL NEVRE SHED BLOOD. (Al-Haythami, Al-Qawl al-Mukhtasar fi 'Alamat al-Mahdi al-Muntazar, p. 24)
This (Amr) (Hazrat Mahdi (pbuh)) WILL FILL EARTH WITH JUSTICE, just as people previously filled it with cruelty. (Sunan Ibn-Majah, , 10/348)
THE WORLD filled with oppression and tyranny WILL OVERFLOW WITH JUSTICE AFTER HE (HAZRAT MAHDI (PBUH)) COMES. (Ibn Hajar al-Haythami, Al-Qawl al-Mukhtasar, p. 20.)
THERE WILL BE SUCH AN ABUNDANCE OF JUSTICE IN THE HAZRAT MAHDI'S (PBUH) TIME that just as all the goods taken away by force will be returned to their owners. (Al-Haythami, Al-Qawl al-Mukhtasar, p. 23)
HIS (THE MAHDI'S (PBUH) JUSTICE WILL COVER ALL PLACES and he will rule among people with the Sunna of the Prophet (saas). He will even also call for one who is in need to be brought forward, and when that command is obeyed only one person will come.
(Al-Qawl al- Mukhtasar Fi Alamat al- Mahdi al-Muntadhar, p. 20)
If there were only one day left for the world, that day would be lengthened until a man from among the people of my household, was sent; just as the Earth is filled with cruelty, He will fill THE EARTH with justice. (Sunan Abu Dawud, 5/92)
One (the Hazrat Mahdi (pbuh)) from my Ahl al-Bayt will emerge. HE WILL FILL THE EARTH WITH JUSTICE, JUST AS IT WAS PREVIOUSLY FILLED WITH OPPRESSION AND ENMITY. (Sunan Abu Dawud, 5/93)
EARTH WILL BE FILLED WITH PEACE just like water fills the pot. NO HOSTILITY WILL REMAIN AND ALL HOSTILITIES, QUARRELS, ENVY WILL ABSOLUTELY VANISH. (Sahih Muslim, 1/136)
... In the same way that Almighty Allah began with me, so He will bring matters to an end with him (Hazrat Mahdi (pbuh)). In the same way that THEY WERE FREED FROM POLYTHEISM AND ANTIPATHY (DISCORD AND ENMITY) AND THEIR HEARTS WERE FILLED WITH FRIENDSHIP AND LOVE THROUGH ME, SO IT WILL BE AGAIN (WITH THE COMING OF HAZRAT MAHDI (pbuh)). (Portents of the Coming of the Mahdi of the End Times, Jalaladdin as-Suyuti , p. 20)
... IN HIS [ HAZRAT MAHDI (pbuh) TIME THE GOOD BECOME EVEN MORE GOOD, AND EVEN THE WICKED ONES ARE TREATED WELL. (Al-Muttaqi al-Hindi, Al-Burhan fi Alamat al-Mahdi Akhir al-Zaman, p. 17)