When evaluating whether to participate in a charitable event organized by a group with differing beliefs, a Muslim should consider the following factors:

1. **Alignment with Islamic Values:** Ensure the event’s objectives and activities align with Islamic principles and values. The charity work should promote positive social impact, justice, and compassion without conflicting with Islamic teachings.

2. **Purpose of Participation:** Assess whether participation will help in achieving a greater good, such as fostering interfaith understanding, building bridges with other communities, or advancing charitable causes that are in line with Islamic ethics.

3. **Organizational Integrity:** Evaluate the reputation and integrity of the organizing group. Ensure that the group’s activities and overall mission do not contradict Islamic principles or engage in activities that are harmful or unethical.

4. **Visibility and Representation:** Consider how your participation might be perceived and whether it will positively represent Islamic values. Ensure that your involvement will be a constructive engagement rather than a compromise of your beliefs.

5. **Consultation with Knowledgeable Individuals:** Seek advice from knowledgeable figures in your community, such as scholars or trusted advisors, to gain perspective on whether participation aligns with Islamic teachings and community standards.

6. **Personal Comfort and Impact:** Reflect on your own comfort level with participating and the potential impact on your faith and personal values. Ensure that participating will not lead to a compromise in your Islamic practices or beliefs.

By considering these factors, a Muslim can make an informed decision about participating in a charitable event that balances respect for differing beliefs with adherence to Islamic principles.