यत्तदग्रे विषमिव परिणामेऽमृतोपमम् |
तत्सुखं सात्त्विकं प्रोक्तमात्मबुद्धिप्रसादजम् || 37||
yat tad agre viṣham iva pariṇāme ‘mṛitopamam
tat sukhaṁ sāttvikaṁ proktam ātma-buddhi-prasāda-jam
yat—which; tat—that; agre—at first; viṣham iva—like poison; pariṇāme—in the end; amṛita-upamam—like nectar; tat—that; sukham—happiness; sāttvikam—in the mode of goodness; proktam—is said to be; ātma-buddhi—situated in self-knowledge; prasāda-jam—generated by the pure intellect
BG 18.37: That which seems like poison at first, but tastes like nectar in the end, is said to be happiness in the mode of goodness. It is generated by the pure intellect that is situated in self-knowledge.