Which ruler of Bengal gave a portion of Orissa to the Marathas?

Nawab Alivardi Khan of Bengal signed a peace treaty with the Maratha Raghoji I Bhonsle in 1751 following repeated Maratha invasions. Under this treaty, Alivardi Khan surrendered a portion of Orissa and agreed to pay $\text{Rs. }12\text{lakhs}$ annually as Chauth to the Marathas.