Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Sankhya Yoga Chapter 2, Verse 2.15.
Sanskrit
यं हि न व्यथयन्त्येते पुरुषं पुरुषर्षभ । समदुःखसुखं धीरं सोऽमृतत्वाय कल्पते ॥ २.१५ ॥
Hindi
क्योंकि हे पुरुषश्रेष्ठ ! दुःख सुखको समान – समझनेवाले जिस धीर पुरुषको ये इन्द्रिय और विषयोंके संयोग व्याकुल नहीं करते, वह मोक्षके योग्य होता है|
English
Only he who is not affected by these senses and sensual objects becomes immortal, for he is considered the best of men because he is well balanced in pain and pleasure.