नास्ति बुद्धिरयुक्तस्य न चायुक्तस्य भावना। न चाभावयतः शान्तिरशान्तस्य कुतः सुखम्
nāsti buddhir-ayuktasya na chāyuktasya bhāvanā na chābhāvayataḥ śhāntir aśhāntasya kutaḥ sukham
Right discrimination is not for him who cannot concentrate. Without concentration, there cannot be meditation; he who cannot meditate must not expect peace; and without peace, how can one expect happiness?
Translated by Shri Purohit Swami
There is no knowledge of the Self for the unsteady, and no meditation is possible for the unsteady, and no peace for the unmeditative, and how can there be happiness for one who has no peace?
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
na—not; asti—is; buddhiḥ—intellect; ayuktasya—not united; na—not; cha—and; ayuktasya—not united; bhāvanā—contemplation; na—nor; cha—and; abhāvayataḥ—for those not united; śhāntiḥ—peace; aśhāntasya—of the unpeaceful; kutaḥ—where; sukham—happiness