Mahabharata 3.33.50

अप्रमत्तेन तत्कार्यमुपदेष्टा पराक्रमःभूयिष्ठं कर्मयोगेषु सर्व एव पराक्रमः

apramattena tatkāryamupadeṣṭā parākramaḥbhūyiṣṭhaṃ karmayogeṣu sarva eva parākramaḥ

Our plain-language meaning of this verse is waiting for scholar review.