Kabir says, 'Tell me the true depth of the water.' I will follow the True Guru's command, even if I am overwhelmed by the current.

Kabir is using the 'measure of water' as a powerful metaphor for the true depth of spiritual knowledge or reality. He is stating that his actions will not be based on his own understanding or judgment. He will completely surrender to the True Guru's instruction, even when the challenges of life (the current) feel overwhelming. This couplet speaks volumes about profound humility and absolute trust.