Dealing with global challenges requires strengthening international solidarity. The two ideas of emphasizing the solidarity rights in human rights literature and the socially constucted identity in the framework of international relations theories are important theoretical efforts to strengthen the concept of international solidarity. The idea of solidarity rights aims to reduce the focus on individualism and encourage all international actors to participate in the implementation of this category of rights, but in comparison with individual rights, it lacks an alternative philosophical basis to justify this category of rights. Forthemore, The idea that identities are socially constructed opens the way to propose alternative narratives of identity in the theories of international relations, but it does not lead to the strengthening of the idea of solidarity. Achieving this goal requires presenting a new narrative of human nature. The question that we intend to answer in this article is how the Rumi's anthropological narrative helps to promote the concept of international solidarity. The argument of this article is that the approach of Rumi's anthropomorphism emphasizes the unity of human souls and the priority of this unity over individuality, identifying a common goal and strengthening the spirit of empathy and responsibility among humans. Therefor, it should be the basis for justifying the rights and common responsibilities of humans, and on the other hand, it should present a new narrative of human nature that expresses the unity and shared identity among humans.