The taking and destruction of Naini Monastery is described by Henry Newman, who was the Reuter's correspondent during the Younghusband Expedition, in Edmund Chandler's book, 'The Unveiling of Lhasa'.
On the succeeding day a large convoy and reinforcements under Major Peterson, 32nd Pioneers, came safely through. The additional troops included a section of No. 7 (British) Mountain Battery, under Captain Easton; one and a half companies of Sappers and Miners, under Captain Shepherd and Lieutenant Garstin; and another company of the 32nd Pioneers. Major Peterson reported that his convoy had come under a heavy fire from the village and monastery of Naini. This monastery lies about seven miles from Gyantse in an opening of the valley just before the road turns into Gyantse Plain. It holds about 5,000 monks. When the column first passed by it, the monks were extremely friendly, bringing out presents of butter and eggs, and readily selling flour and meat. The monastery is surrounded by a wall thirty feet high, and at least ten feet thick. The buildings inside are also solidly built of stone. Altogether the position was a very difficult one to tackle, but Colonel Brander, following his usual policy, decided that the enemy must be turned out of it at all costs. Accordingly, on the 24th a column, which included Captain Easton's two guns, marched out to Naini. But the monastery and the group of buildings outside it were found absolutely deserted. The walls were far too heavy and strong to be destroyed by a small force, which had to return before nightfall, but Captain Shepherd blew up the four towers at the corners and a portion of the hall in which the Buddhas were enthroned.