Bhagavad Gītā Chapter Thirteen verse 21

puruṣaḥ prakṛtistho hi bhuṅkte prakṛtijān guṇān |
kāraṇaṃ guṇasaṅgo ’sya sadasadyonijanmasu ||

puruṣa - animating principle, self, consciousness, spiritguṇa - attributes of nature; qualitiesjanman - birth

Commentaries and Reflections

T Krishnamacharya:

Sukha and Duḥkha cannot be there at the same time.”