Question

why is the first shower of rain said to be a impure​

Answer 1

Answer:

Because the pollution and dust particles in atmosphere which mix with water vapour and the rain water become impure.

Answer 2

Answer:

because lowest part of cloud which is raining after few minutes is polluted and the dust particles from atmosphere is mixed with that cloud.

so, the water particles which is present in lowest part is polluted.

therefore, it is said that first shower of rain is impure