एकवस्तुम् द्विधा कर्तुम् बहवः सन्ति धन्विनः ।
There are many archers who can split one thing into two. But there is only one archer, Manmatha, who unites two into one.
This alludes to the fact that the Lord of Love sends an arrow to unit two people’s heart. So the poet takes something that is meant for a singular purpose and uses it in the context of getting an entirely opposite result.