Devapala Dharmapala was succeeded by his son Devapala who is regarded
as the most powerful Pala ruler. Epigraphic records credit him with extensive
conquests from the Himalayas to the Vindhyas and from the eastern to the
western ocean. He is said to have defeated the Gurjaras and the Hunas and
conquered Utkala and Kamarupa. The Huna and Kambhoja princes who
submitted to Devapala cannot be identified properly. The Gurjara adversary
may be identified with Mihira Bhoja, who tried to expand his kingdom
eastwards. But he was defeated by Devapala.
                    PATRONAGE BY DEVAPALA
  Like his father, Devapala was a great patron of Buddhism and his fame
  spread to many Buddhist countries outside India. Balaputradeva, a king of
  the Buddhist Sailendras, ruling Java, sent an ambassador to Devapala,
  asking for a grant of five villages in order to endow a monastery at
  Nalanda. Devapala granted the request. He appointed Viradeva, as head of
  Nalanda monastery. Devapala’s court was adorned with the Buddhist poet
  Vajradatta, the author of Lokesvarasataka.
    Sulaiman, an Arab merchant who visited India and wrote his account in
AD 85, refers to the Pala kingdom as Ruhmi. According to him, the Pala
emperor was at war with the Gurjaras and the Rashtrakutas and had more
troops than his adversaries.
Later Palas The glory of the Pala empire suffered irretrievably with the
death of Devapala. The rule of his successors was marked by a steady process
of disintegration. Devapala was succeeded by Vigrahapala. After a short
reign of three or four years, Vigrahapala abdicated the throne.
    Vigrahapala’s son and successor, Narayanapala, had a long reign.
Rashtrakuta king Amoghavarsha defeated the Pala ruler. The Pratiharas
gradually extended their power in the east. Narayanapala not only lost
Magadha, but also north Bengal, the heartland of the Palas. However,
towards the close of his reign, Narayanapala recovered north Bengal and
south Bihar from the Pratiharas,  the latter being weakened by the invasion of