Now, here is the word to word meaning of the verse—
First line:
First part
कर्मण्य/Karmanya = In the work
एव/Eva = Only
अधिकार/Adhikar = Right
ते/Te = Your
Second part
मा/Ma = No/Not
फलेषु/Phaleshu = In the fruit/result (the root word is “फल”/”Phal” here, means, fruit of work
Karmanye vadhikaraste Ma Phaleshu Kadachana,
Ma Karmaphalaheturbhurma Te Sangostvakarmani
You have the right to work only but never to its fruits.
Let not the fruits of action be your motive, nor let your attachment be to inaction