Self-abidance

Always keeping the mind (the attention) fixed in the Self (in the feeling ‘I’) alone is called ‘Self-inquiry’ ... Remaining firmly in Self-abidance, without giving even the least room to the rising of any thought other than the thought of Self (that is, without giving even the least attention to any second or third person, but only to Self), is surrendering oneself to God (which alone is called the supreme devotion).

http://www.arunachala-ramana.org/publications/who_am_i.html