This is just a poem and NOT a true story...
The lady looked at me strange
Little she expected I return the change
For she had incorrectly given me
An extra penny
I had turned to leave
But my heart said: what would this achieve?
Allahs displeasure I would earn
To Hellfire my face would turn
Quickly I returned the extra change and went on my way
Thanking Allah for saving me that day
Inshallah, in her heart a respect for Muslims has been planted
And perhaps one day for her Hidayah and Islam granted.
Remember me in your Duas.