उक्तमर्थमिममात्मनि स्वयंभावय प्रथितयुक्तिभिर्धिया ।संशयादिरहितं कराम्बुव -त्तेन तत्त्वनिगमो भविष्यति ॥ २६५ ॥
In plain words
Take this teaching and turn it over in your own mind, using the reasoning that has already been tested and proven, until every last doubt about it is gone — until it is as plain to you as water held in your open palm. Do that, and certainty about the truth will finally settle in.
Close to the Sanskrit
Contemplate, yourself, within the self, with the intellect, by means of the well-established reasonings, this teaching just stated, [until it is] free from doubt and the like, like water in the palm of the hand. By that, the conclusive ascertainment of the truth will come about.