Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Karma Yoga Chapter 3, Verse 3.9.
Sanskrit
यज्ञार्थात्कर्मणोऽन्यत्र लोकोऽयं कर्मबन्धनः । तदर्थं कर्म कौन्तेय मुक्तसङ्गः समाचर ॥ ३.९ ॥
Hindi
यज्ञके निमित्त किये जानेवाले कर्मोंसे अतिरिक्त दूसरे कर्मोंमें लगा हुआ ही यह मनुष्यसमुदाय कर्मोंसे बँधता है। इसलिये हे अर्जुन! तू आसक्तिसे रहित होकर उस यज्ञके निमित्त ही भलीभाँति कर्तव्यकर्म कर|
English
The Lord continued: O Arjuna, all the actions that a person performs in this world, except of course those associated with sacrifice or Yagya, tie that person to the world. Therefore, O Arjuna to break free from this link, perform all your actions well without being attached to them.