tripad-bhutam hi tat padam
vibhutir mayiki sarva
prokta padatmika yatah
tri-pad-vibhuteh—of the three fourths of the energy; dhamatvat—because of being the abode; tri-pad-bhutam—consisting of three fourths of the energy; hi—certainly; tat padam—that abode; vibhutih—the energy or potency; mayiki—material; sarva—all; prokta—said; pada-atmika—only one fourth; yatah—therefore.
" 'Because it consists of three fourths of the Lord's energy, the spiritual world is called tripad-bhuta. Being a manifestation of one fourth of the Lord's energy, the material world is called eka-pada.'
Link to this page: https://prabhupadabooks.com/cc/madhya/21/56