"[5] Returning to Calcutta, Valisinha continued his studies at the Mitra Institution (Main) and began to help Dharmapala with the administration of the MBS.

He assisted with the logistics of building the Sri Dharmarajika Chetiya Vihara in Calcutta to house a Buddha relic and participated in the opening ceremonies in 1920.

[7] Valisinha also became deeply involved with the MBS's titular project to restore Buddhist control over the ancient Mahabodhi Temple in Bodh Gaya, built on the site where Shakyamuni Buddha is said to have reached full awakening.

Valisinha "helped the bhikshus to form classes for the study of Pali, Buddhism, and meditation, and by his amiable disposition endeared himself to all with whom he came in contact.

[11] At this time, Dharmapala was in quite ill health, and Valisinha returned to India in 1930 to resume his duties as secretary of the Maha Bodhi Society, including the completion of the Mulagandhakuti Vihara in Sarnath.

One of the major projects that Valisinha oversaw in his youth was the construction of the Mulagandhakuti Vihara in Sarnath, near Varanasi, on the site where the historical Buddha is said to have given his first sermons.

The opening ceremonies were to be held on the full moon of November 1931, so Valisinha was frequently going back and forth between Calcutta and Sarnath to look after both wings of the Society's activities.

He was able to get a British Buddhist, Mr. B. L. Broughton, who had come to India with him, to donate 10,000 rupees to pay for the painting the murals of the life of the Buddha by the Japanese painter Nōsu Kōsetsu.

The opening ceremonies were attended by an estimated 15,000 people (including Indian National Congress president Jawaharlal Nehru and the prominent publisher Ramananda Chatterjee) making this "the largest Buddhist function held in India ... in living memory.

"[13] With the blessings of Dharmapala (whose health had begun to decline), Valisinha founded a Buddhist school (the Maha Bodhi Vidyalaya), a library, and a free dispensary in Sarnath.

Taixu expressed appreciation for the work of the MBS but explained that Chinese Buddhists could not be of much help at that time due to the Japanese invasion.

At the conclusion of the reception, Taixu presented a silver pagoda gifted by Chiang Kai-shek to the Maha Bodhi Society as “a token of China’s Goodwill.

[21] His remains were kept on public view at the headquarters of the Maha Bodhi Society in Colombo for three days, and many government officials, including Governor-General William Gopallawa and Prime Minister Dudley Senanayake, prominent citizens, and important Buddhist clergy came to pay their respects.