Valmiki Ramayana Kishkindha Kanda Sarga 65 Shloka 32

तत् तथाहि therefore, अस्य of this, कार्यस्य of the task, गतिः advancement, अन्यथा otherwise, न भवति will not be, तत् that, दृष्टार्थः well aware, भवानेव you alone, सञ्चिन्तयितुम् to think over well, अर्हति you should.

'Therefore, think over well so that we do not fail ultimately. You have a vision.You should suggest means by which this mission does not misfire.'