Pāṇḍurāya Tīrtha is a tīrtha on the bank of the Śābhramatī. Nakula, the son of Pāṇḍu, installed Pāṇḍurārya here, a form of Bhagavān Vishṇu. Hanumān also did hard tapas (austerity) at this place and gained the power to leap across the ocean.

Nakula’s installation

Dharmarāja Yudhishṭhira held the great Rājasūya yajña (fire ritual). It needed the conquest of every direction. Nakula, son of Pāṇḍu, conquered the south. When he came to this bank of the Śābhramatī, he installed Pāṇḍurārya with great devotion. The Purāṇa says the mūrti gives “enjoyment and moksha”. The tīrtha is named after this installation. The Padma Mahā Purāṇa tells this in the Uttara Khaṇḍa, Chapter 166.

Hanumān’s tapas

The Purāṇa records that Hanumān did very hard tapas at Pāṇḍurāya Tīrtha. Through the power of the holy place, the power to leap across the ocean arose in him.

Merit of bathing and saluting

A man who bathes in the Śābhramatī and salutes Pāṇḍurārya gains the eight great siddhis (supernatural powers), beginning with aṇimā (the power to become as small as an atom), and great intelligence.
To salute Pāṇḍurārya with a pure mind is equal to a year of worship.
A man who gives up his body at this tīrtha reaches the peak of Kailāsa and becomes an attendant of Caṇḍeśvara.

Sources

Padma Mahā Purāṇa, Uttara Khaṇḍa, Chapter 166