Synonyms:

tasmat–therefore; asaktah–without attachment; satatam–constantly; karyam–as duty; karma–work; samacara–perform; asaktah–nonattached; hi–certainly; acaran–performing; karma–work; param–the Supreme; apnoti–achieves; purusah–a man.

Translation:

Therefore, without being attached to the fruits of activities, one should act as a matter of duty; for by working without attachment, one attains the Supreme.