Answered by Shaykh Faraz Rabbani
If one has previously worked in a bank, and still has money left over from working there, could this be a source of one doing haram action presently. Along with repentance what is that best way of dealing with the situation?
It depends on the nature of one’s employment in the bank.
What the scholars say is that one needs to calculate (using one’s reasonable but conservative estimation) the percentage of one’s earnings that were directly riba-related, and make a firm commitment to get rid of these from one’s dues (dhimma), in the way described previously, as soon as reasonably possible, in a way that:
a) ensures one does pay it off, without undue delay;
b) does not impede one’s essential current living, or necessary financial obligations.
If one does this, and couples it with sincere repentance, then Allah will wipe away both the sin and its negative traces.
The Light of Prophethood, our Beloved Messenger (Allah bless him & give him peace) is reported to have said, “The one who repents from sin is like the one who never sinned.” [Ibn Maja, Tabarani in his Kabir, and Bayhaqi in his Shu`ab]
And Allah alone gives success.