In plain words
Yaśōdā begs: "When he struck the pillar he had himself measured out and raised, you grew forth right there in the form of a lion with sword-sharp claws, probed his heart, and tore open the broad, bright chest of Hiraṇya; with those hands clap your hands! You who drank at the breast of the demoness [Pūtanā], clap your hands!"