If someone is concerned that their wealth might not be entirely earned through halal (permissible) means, they should take the following steps:

1. Seek Knowledge: Consult knowledgeable scholars or experts in Islamic finance and law to understand what constitutes halal and haram (forbidden) earnings. This will help clarify which activities or sources of income are compliant with Islamic principles.
2. Assess Current Earnings: Review and evaluate your sources of income to determine if they align with Islamic guidelines. Identify any areas where your earnings might not be halal.
3. Rectify Past Earnings: If you discover any income that is not halal, you should take steps to rectify this:
   • Charity: Donate the amount that you believe is not halal to charity (sadaqah) without expecting any reward. This act purifies your wealth.
   • Repentance: Engage in sincere repentance (tawbah), asking for forgiveness from Allah for any unintentional wrongs.
4. Adjust Practices: Modify your income sources and financial practices to ensure they comply with halal standards. This might involve changing your job, avoiding investments in haram activities, or refraining from interest-based transactions.
5. Maintain Halal Earnings: To ensure future earnings are halal:
   • Follow Islamic Principles: Adhere to guidelines regarding earning, investing, and spending as prescribed by Islamic law.
   • Consult Experts: Regularly seek advice from Islamic finance experts to ensure your financial activities are compliant.
   • Educate Yourself: Continuously educate yourself about halal and haram in financial matters to avoid inadvertent mistakes.

By following these steps, one can address past concerns and work towards ensuring that future earnings are in line with Islamic values.