Ashtavakra Gita
सुखादिरूपा नियमं भावेष्वालोक्य भूरिशः। शुभाशुभे विहायास्मादह- मासे यथासुखम्॥१३- ७॥
I understand by experience that pleasure and pain come and go again and again. Hence I exist pleasantly in all situations abandoning the feelings of auspicious(good) and inauspicious(bad).
english translation
sukhAdirUpA niyamaM bhAveSvAlokya bhUrizaH। zubhAzubhe vihAyAsmAdaha- mAse yathAsukham॥13- 7॥
hk transliteration by Sanscript