Bhagavad Gita
Chapter 18 · Verse 78
यत्र योगेश्वरः कृष्णो यत्र पार्थो धनुर्धरः। तत्र श्रीर्विजयो भूतिर्ध्रुवा नीतिर्मतिर्मम॥
yatra yogeśvaraḥ kṛṣṇo yatra pārtho dhanur-dharaḥ, tatra śrīr vijayo bhūtir dhruvā nītir matir mama
The Gita's closing verse: a statement that when wisdom and disciplined, committed action come together, good outcomes tend to follow.
Where wisdom and determined action meet, success naturally follows.