pranavera yei artha, gayatrite sei haya
sei artha catuh-slokite vivariya kaya
pranavera—of the sound vibration, omkara; yei—whatever; artha—meaning; gayatrite—in the Gayatri mantra; sei—that; haya—there is; sei artha—that same meaning; catuh-slokite—in Srimad-Bhagavatam summarized in four slokas; vivariya—describing elaborately; kaya—has said.
"The meaning of the sound vibration omkara is present in the Gayatri mantra. The same is elaborately explained in the four slokas of Srimad Bhagavatam known as catuh-sloki.
Link to this page: https://prabhupadabooks.com/cc/madhya/25/94