Getting dirty in the fields.

Your boots will get muddy.  Your socks wet.  You are going to stain your jeans.  There will be dirt underneath your finger nails and you might suffer some scratches.  

Working in the fields means getting dirty. 

Your work will be the same. 

The bodhisattva knows that their time on this earth is very short.  They know that the road ahead will be long.  Knowing the truth of suffering they plunge into the fields.  Knowing liberation upon arising, they do not fear getting covered in mud.  At the end of the day, they dedicate their work for the benefit of others.  Tomorrow, they rise again. 

That is how you practice on the path.