Meaning:
Here, Swami Deikan refers to the four kinds of Prapatthi: Svanishtai, Ukthi nishtai, Achaarya nishtai and Bhaagavatha nishtai. Swami says that he has performed prapatthi at the lotus feet of Varadhan, who grants the boon of Moksham to one, who has performed any one of the four kinds of Prapatthi.
Source: