Namo bhagavate tubhyaṁ vāsudevāya dhīmahi
Pradyumnā-yāniruddhāya namaḥ saṅkarṣaṇāya ca
Salutations to Lord Vāsudeva! Salutations to the Lords Pradyumna, Aniruddha and Sankarshana! I contemplate upon the Supreme Godhead who manifests in all these 4 forms (chatur-vyuha).
from Srimad Bhagavatam – Day 20(Translations of Pujya Sri Ganapathy Sachchidananda Swamiji’s daily explanation of Srimad Bhagavatam on ETV from December 2015 onwards are compiled by Parimala Eshwarla)