SB 11.16.3
yesu yesu ca bhutesu
bhaktya tvam paramarsayah
upasinah prapadyante
samsiddhim tad vadasva me
Translation:
Please tell me of the perfections that great sages achieve by worshiping You with devotion. Also, kindly explain which of Your different forms they worship.
Purport:
Sri Uddhava here inquires about the spiritual opulences of the Lord, which consist primarily of His visnu-tattva expansions such as Vasudeva, Sankarsana, Pradyumna and Aniruddha. By worshiping different plenary expansions of the Lord one achieves particular perfections, and Sri Uddhava wants to know about this.