What does the word「なさんな」mean?

Question

The person said the following sentence after he was told to hurry up doing something.

Here is the full sentence containing the word.　

そう あわてなさんな　おっちゃん まだまだ日は高いじゃござんせんか!

Answer 1

あわてなさんな ≂ あわてるな "No hurry" "Don't panic"

なさんな is a contracted pronunciation of なさるな. なさるな consists of: literary honorific 「なさる」 + negative imperative final particle 「な」.