Śālagrāma-śilā—the worshipable Deity of Lord Nārāyaṇa in the form of a round stone. It is described in detail in the final canto of the Padma Purāṇa.

Salagrama-sila-the worshipable Deity of Lord Narayana in the form of a round stone. It is described in detail in the final canto of the Padma Purana.
 

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