image credit: Wikipedia Sriyantra
In the thirty-fifth verse of his Cidvilāsastava (‘Hymn to the Play of Consciousness’), Amṛtānanda teaches about the deeper aspects of worshiping the four principal Kaula traditions as follows:
अन्तरङ्गकरणात्मनां चतुःस्रोतसां विविधदेवताजुषाम् ।
पूजनं परमिहोन्मनीशिखामध्यवर्तिपरमात्मयोजनम् ॥ ३५ ॥
antaraṅgakaraṇātmanāṃ catuḥsrotasāṃ vividhadevatājuṣām |
pūjanaṃ param ihonmanīśikhāmadhyavartiparamātmayojanam || 35 ||
“Here worship of the four [Kaula] streams devoted to various deities and consisting of inner elements and the Śākta pantheon, in its highest form, is uniting with the supreme Self that is present at the peak of the transmental state.” (translation by Ben Williams)