I like this one. It draws attention to the shift between sleep and wake. Ramana Maharshi in particular speaks about the value of comparing the sleeping state to the waking state. The purity that becomes infiltrated by all the mind stuff that pours in when our dreams leave us and the day to day creeps in.
I do love the early morning feeling between sleep and wake… dream mixes with waking sights and feelings and it is almost as if the dream embodied floats out the window… this haiku says it best! I should keep quiet and watch!