Hazrat Mahdi (as) will be much loved by people

Certain it is that he Hazrat Mahdi (as) will not appear until he is the most beloved of people due to the evils they suffer. (Al-Muttaqi al-Hindi, Al-Burhan fi Alamat al-Mahdi Akhir az-Zaman, p. 27)

The people of the Earth and sky will approve of him [Hazrat Mahdi (as)]. (Al-Haysami, Vol. VII, p. 313; from Abu Nuaim, as-Suyuti, Vol. II, p. 58; Al-Muttaqi al-Hindi, Al-Burhan fi Alamat al-Mahdi Akhir az-Zaman, p. 31)

Allah will fill everyone’s hearts with love of him [Hazrat Mahdi (as)]. (Ibn Hajar al-Haythami, Al-Qawl al-Mukhtasar fi `Alamat al-Mahdi al-Muntadhar, p. 42)

Hazrat Mahdi (as) will come to people and they will embrace him with love and passion, like a new bride... (Ibn Hajar al-Haythami, Al-Qawl al-Mukhtasar fi `Alamat al-Mahdi al-Muntadhar, p. 35)

The people of Earth and sky, all wild animals, birds, and even the fish in the sea will approve of his [Hazrat Mahdi’s (as)] rule. (Ibn Hajar al-Haythami, Al-Qawl al-Mukhtasar fi `Alamat al-Mahdi al-Muntadhar, p. 31)

The last of this strife will be the killing of innocent people, and then Hazrat Mahdi (as) will appear, to the approval of all. (Al-Muttaqi al-Hindi, Al-Burhan fi Alamat al-Mahdi Akhir az-Zaman, p. 38)

Allah will place his [Hazrat Mahdi’s (as)] love in the people's hearts. Thus they will be a community who are lions by day and who worship by night. (Al-Uqayli, An-Najmu's-saqib fi Bayan Anna'l Mahdi min Awladi Ali b. Abu Talib Ale't-Tamam wa al-Qamal)

There will remain no individual who will not be pleased within the Community of Muhammad (saas). (Al-Barzanji, Al-Isha'ah li-ashrat al-sa'ah, p. 163)

He is fair of face, fragrant, imposing, but lovable and close to people. (Mehdi, Deccal, Mesih [The Mahdi, the Antichrist, the Messiah], p. 102)