Why shall he perform bad Karma who has been properly nurtured for many a thousand months and years?

One should, perform karma with nonchalance without expecting the benefits because sooner of later one shall definitely gets the fruits.

Only those who perform their duties promptly become successful.

A person who performs good Karma (deeds) is always held in high esteem.

The karma yogi puts efforts and naturally gets the fruits although he does not expect them.

Contemplation gives direction to our knowledge and leads to realization.