Bhagavatapurana 3.13.39

3.13.39

somas tu retaḥ savanāny avasthitiḥ saṃsthā-vibhedās tava deva dhātavaḥ /
satrāṇi sarvāṇi śarīra-sandhis tvaṃ sarva-yajña-kratur iṣṭi-bandhanaḥ //

38. The Soma juice is Thy seed, the three savanas are Thy seat, the seven kinds of main sacrifices are the several constituents or Dhatus of Thy body; all the satras form the joints in Thy body and Thou art all Yagnas, and all Kratus; and the sacrificial act is the tie to which Thou art amenable.