Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Moksha-Sanyasa Yoga Chapter 18, Verse 18.46.
Sanskrit
यतः प्रवृत्तिर्भूतानां येन सर्वमिदं ततम् । स्वकर्मणा तमभ्यर्च्य सिद्धिं विन्दति मानवः ॥ १८.४६ ॥
Hindi
जिस परमेश्वर से —— सम्पूर्ण प्राणियों की उत्पत्ति हुई है और जिससे यह समस्त जगत् व्याप्त है, उस परमेश्वर की अपने स्वाभाविक कर्मों द्वारा पूजा करके मनुष्य परम सिद्भि को प्राप्त हो जाता है ।
English
They all reach perfection while performing their various designated tasks in society and of course by worship of the Lord, who is the maker and source of all existence (and beyond) in this world. O Arjuna, listen carefully now as I explain how a man achieves perfection while still finding joy in his duties and other work in this world.