Valmiki Ramayana Ayodhya Kanda Sarga 28 Shloka 6
Original Shlokaहितबुद्ध्या खलु वचो मयैतदभिधीयते। सदा सुखं न जानामि दुःखमेव सदा वनम्।।2.28.6।।
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मया by me, एतत् वचः these words, हितबुद्ध्या with prudence, अभिधीयते हि is being said, वनम् forest, सदा always, सुखम् as happy, न जानामि I do not know, सदा always, दुःखमेव grief only.
I am saying all this in your interest. The forest is a haven of hardships. I know of no happiness in the forest.