Bhagavad Gita 4.12

Those who seek success worship the Powers, and their actions in this world bear immediate fruit.

काङ्क्षन्तः कर्मणां सिद्धिं यजन्त इह देवताः।
क्षिप्रं हि मानुषे लोके सिद्धिर्भवति कर्मजा॥

kāṅkṣantaḥ karmaṇāṃ siddhiṃ yajanta iha devatāḥ|
kṣipraṃ hi mānuṣe loke siddhirbhavati karmajā||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).