The magnetic field is linear in the source Idl just as the electrostatic field is linear in its source ie. electric charge. Explain

From BIOT-SAVART LAW magnetic field due to source idl is given by
$d\overrightarrow{B}=\frac{{\mu }_0}{4\pi }\frac{i\overrightarrow{dl}\times \overrightarrow{r}}{r^3}$
which linearly dependent on source of magnetic field idl

​Electric field due to a point charge is given by
$E=\frac{1}{4\pi {\epsilon }_0}\frac{Q}{r^2}$
which linearly depend on the source of filed Q