Ashtavakra Gita
समाधानसमाधान- हिताहितविकल्पनाः। शून्यचित्तो न जानाति कैवल्यमिव संस्थितः॥१७- १८॥
Beyond doubts and solutions, good and bad, a person with still mind, remains established in self.
english translation
samAdhAnasamAdhAna- hitAhitavikalpanAH। zUnyacitto na jAnAti kaivalyamiva saMsthitaH॥17- 18॥
hk transliteration by Sanscript