3.19 Since this is so, therefore, asaktah, remaining unattached; samacara, perform; satatam, always; karyam, the obligatory; daily karma, duty; hi, for; acaran, by performing; (one's) karma, duty; asaktah, without attachment, by doing work as a dedication to God; purusah, a person; apnoti, attains; param, the Highest, Liberation, through the purification of the mind. This is meaning.
And (you should perform your duty) for the following reason also: