Text 71
Conclusion –The Perfection of Renunciation
785
etāni —all this;  api —certainly;  tu —must;  karmāṇi —activities;  saṅgam —association;  tyaktvā —renouncing;  phalāni —results;  ca —also;  kartavyāni —as duty;  iti —thus;  me —My;  pārtha —O son of Pṛthā;  niścitam —definite;  matam —opinion;  uttamam —the best.
TRANSLATION
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.
PURPORT
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.
TEXT 7
नियतस्य तु संन्यासः कर्मणो नोपपद्यते । मोहात्तस्य परित्यागस्तामसः परिकीर्तितः ॥ ७ ॥
niyatasya tu sannyāsaḥ karmaṇo nopapadyate mohāt tasya parityāgas tāmasaḥ parikūrtitaḥ
niyatasya —prescribed duties;  tu —but;  sannyāsaḥ —renunciation;  karmaṇaḥ —activities;  na —never;  upapadyate —is deserved;  mohāt —by illusion;  tasya —of which;  parityāgaḥ —renunciation;  tāmasaḥ —in the mode of ignorance;  parikīrtitaḥ —declared.