Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Jnana-Karma-Sanyasa Yoga Chapter 4, Verse 4.12.
Sanskrit
काङ्क्षन्तः कर्मणां सिद्धिं यजन्त इह देवताः । क्षिप्रं हि मानुषे लोके सिद्धिर्भवति कर्मजा ॥ ४.१२ ॥
Hindi
इस मनुष्यलोकमें कर्मोंके फलको चाहनेवाले लोग देवताओंका पूजन किया करते हैं; क्योंकि उनको कर्मोंसे उत्पन्न होनेवाली सिद्धि शीघ्र मिल जाती है|
English
O Arjuna, those who do actions or Karma for the fulfillment of their desires and goals and those who worship deities (gods and god desses) for their prosperity, they will undobtedly achieve success quickly.