When the understanding, with-drawn into the mind, succeeds in absorbing itself into contemplation that is shorn of attributes, it acquires a knowledge of Brahma like the touch of gold on a touch-stone.
यदा निर्गुणमानोति ध्यानं मनसि पूर्वजम्। तदा प्रज्ञायते ब्रह्म निकषं निकषे यथा॥