If im working for a highway company and im working for a specific project, then part of the project is desiging a sign that leads to a casino, does all my income become haram for that project? Assuming that the rest is fine and halal ( desiging pavments, engineering geometry etc)
Wasalam
May Allah bless you.
No it will not. Do ask God for forgiveness and if you can afford, donate part of your wage into charity. make an estimate yourself of the amount you feel that needs purifying.
And Allah knows best!