When choosing between two competing obligations, a person should prioritize based on several key considerations:

1. **Immediate Necessity:** Prioritize the obligation that addresses a more urgent or critical need. For example, if one obligation is related to fulfilling a financial responsibility or addressing a pressing personal matter, it may take precedence.

2. **Islamic Principles:** Evaluate which obligation aligns more closely with core Islamic principles and duties. Obligations such as fulfilling debts or maintaining family obligations are highly emphasized in Islam.

3. **Impact on Others:** Consider the impact of fulfilling each obligation on others. Prioritize obligations that have a more significant effect on the well-being of others or that prevent harm.

4. **Consultation:** Seek advice from knowledgeable individuals, such as scholars or trusted advisors, who can provide guidance based on Islamic teachings and the specific context.

5. **Feasibility:** Assess which obligation is more feasible to fulfill given your current circumstances and resources. Sometimes practical considerations can influence which obligation can be fulfilled more effectively.

6. **Long-term Benefits:** Reflect on the long-term benefits of each obligation. Consider which choice will have a more positive or lasting impact on your life and the lives of others.

By weighing these factors, you can make a more informed decision that aligns with Islamic values and addresses both the immediate and broader implications of each obligation.