saddarSanam — verse 26
bhAve ahamaH sarvam idam vibhAti
laye ahamO naiva vibhAti kincit
tasmAt aham-rUpam idam samastam
tat-mArgaNam sarvajayAya mArgam
in emergence of ego, all this shines
in merger of ego not even a thing shines
thus all this is the form of ego
aiming it in inquiry is the way of universal victory
bhavE in rise or expression of aham rises everything. layE in dissolution of aham - ego, everything disappears. So, everything is a form of ego. mArgaNam means searching for or inquiring into; tat that is the mArgam method, path or the way for sarva-jayam victory over everything.
The source of everything experienced is ego. So, seeking the source of that ego leads to victory over everything. That is self-inquiry!