POSITIONS OF MASTERY – SECOND ONE
26. ‘When a man having subjectively the idea of form sees externally forms which are boundless, and pleasant or unpleasant to the sight, and having mastered them is conscious that he knows and sees–this is the second position of mastery.
Buddhist Suttas – MAHÂ-PARINIBBÂNA-SUTTANTA
Translated from Pâli by T. W. Rhys Davids [1881]
http://www.sacred-texts.com/bud/sbe11/sbe1103.htm