On that auspicious day when I attained liberation, what powerful surges or currents arose within my mind.

This couplet speaks about the profound inner experience one has at the moment of liberation. It describes a powerful surge of emotions, like a flood, that rises within the person. This feeling is awakened precisely on the auspicious day when true freedom or salvation is attained. It suggests a transformative moment where the heart is overwhelmed with immense peace, joy, and a sense of auspiciousness. It's a description of the soul's joyous reaction to ultimate freedom.