The Shayar says that the flaw being discussed is that of wine, which is actually the ego. This ego makes a human behave like an animal and consumes from the knot.

Kabir speaks here about a flaw that is not physical, but existential. The 'wine' is a metaphor for ego (Aapa), which obscures the true self and leads man to act instinctively, like an animal. This ego not only degrades human behavior but also consumes the very essence or knot (gaanth) of life's connections. It is a profound warning about the destructive nature of pride.