Breath as a resting place & as a support for the mind to rest.
Alambana means to support or as a resting place to rest the mind. Bhagavad Gita 6.20: That place where thought comes to rest - breathing, held steady by the practice of yoga - breathing, And where Seeing the self by the very self, one becomes satisfied within the self. Bhagavad Gita 6.21: That boundless happiness beyond the senses which is grasped through discernment That place where one knows this, indeed is established in it and does not swerve from the truth. Bhagavad Gi