All these activities should be performed without any expectation of result. They should be performed as a matter of duty, O son of Prtha. That is My final opinion. BG 18.6 - 1972

Expressions researched:
"All these activities should be performed without any expectation of result. They should be performed as a matter of duty, O son of Pṛthā. That is My final opinion"

Bhagavad-gita As it is

BG Chapters 13 - 18

All these activities should be performed without any expectation of result. They should be performed as a matter of duty, O son of Pṛthā. That is My final opinion.

BG 18.6 (1972), Translation and Purport

All these activities should be performed without any expectation of result. They should be performed as a matter of duty, O son of Pṛthā. That is My final opinion.

Although all sacrifices are purifying, one should not expect any result by such performances. In other words, all sacrifices which are meant for material advancement in life should be given up, but sacrifices that purify one's existence and elevate one to the spiritual plane should not be stopped. Everything that leads to Kṛṣṇa consciousness must be encouraged. In the Śrīmad-Bhāgavatam also it is said that any activity which leads to devotional service to the Lord should be accepted. That is the highest criterion of religion. A devotee of the Lord should accept any kind of work, sacrifice, or charity which will help him in the discharge of devotional service to the Lord