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There is no such thing as a "hand hence".
The word 'hence' is an adverb, a word that modifies a verb. There is no noun form for hence.
I forgot my book. Hence, I had to share one with a classmate.
He lied to the police. Hence, he was arrested for giving false information to an officer.
I had a cold. Hence, I didn't feel like talking.
The word 'hence' is an adverb that modifies a verb as for this reason, therefore. There is noun form for the adverb hence.
I missed the train, hence I will be late for the meeting.