Variantly: Just as a bound flask stands, neither emitting nor admitting, so, the spirits of the Egyptians were bound up within them, neither emitting nor admitting, faint from the smell of the sea, viz. (Job 41:23) "He bubbles up the sea like a pot, etc." And to Israel, the sea was like a bed of spices, viz. (Ibid.) "He makes the sea like a spice-bed." (Song of Songs 4:16) "Awake, O north wind, and come, O south, blow over my garden that its spices may flow."
Just as a Bound Flask Stands, Neither Emitting
Mekhilta Tractate Shirah 6:19