Answered by Shaykh Muhammad Hassan al-Shanqītī | Translated by Suhaib Webb
What happens to the money I earned before my conversion to Islam if it came from forbidden sources?
When someone enters Islam, then what was his before his Islam, is his after it. This means, anything he owned prior to his conversion is his even it came from interest, selling alcohol or pork products. These things became permissible with his Islām; this change in his life allows for this exception.