Srimad Bhagavatam Canto 11, Chapter 11, Text 46

SB 11.11.46

dhisnyesv ity esu mad-rupam
 sankha-cakra-gadambujaih
yuktam catur-bhujam santam
 dhyayann arcet samahitah
 
Translation: 
 
Thus, in the previously mentioned places of worship and according to the processes I have described, one should meditate on My peaceful, transcendental form with four arms holding a conchshell, Sudarsana disc, club and lotus flower. In this way, one should worship Me with fixed attention.
 
Purport: 
 
The Lord has previously explained that He appears in different transcendental forms to His pure devotees so that they may unlimitedly increase their love of Godhead. Here is given a general description of the four-armed Narayana form, which pervades the material world as Supersoul, or Paramatma. The pure devotees, however, do not meditate upon the Lord within the heart but rather render active service to a specific form of the Lord, such as Rama or Krsna, and thus perfect their realization of Bhagavan, or the Supreme Lord, who engages in transcendental pastimes with His devotees in the spiritual world. Yet even within the material world one can spiritualize one’s existence by seeing the Supreme Lord within everything and worshiping Him by constant meditation. As mentioned in the previous verses, one should also go to the temple and specifically worship the Deity and participate in spiritual festivals. One should not be puffed up and claim that because one is meditating on the Lord within nature there is no need to go to the temple. Temple worship has been repeatedly emphasized by the Lord Himself. The word samahita in this verse indicates samadhi. If one very carefully worships the Deity or hears and chants about the pastimes of Lord Krsna, one is certainly in samadhi. By worshiping and glorifying the Lord twenty-four hours a day one becomes a liberated soul and gradually rises completely beyond the influence of the material creation. The living entity is called atma, or eternal soul, because of his relationship with the Paramatma, the Supreme Personality of Godhead. By worshiping the Lord, our eternal nature revives, and as we increase our enthusiasm and steadiness in devotional service, material existence fades away.
 
Srimad Bhagavatam Canto 11, Chapter 11, Text 43-45
Srimad Bhagavatam Canto 11, Chapter 11, Text 47