Ref. No. 1967/44-1899
In the name of Allah the most Gracious the most Merciful
The answer to your question is as follows:
The finger is a sign of pointing, which means that you have been pointing the finger at others, i.e. judging the person as good or bad without knowing the truth. Due to which others may harm you, so you have to leave this habit at earliest and give Sadaqa and charity.
And Allah knows best
Darul Ifta
Darul Uloom Waqf Deoband