In Islam there is no distinction between the rich and poor, black and white, Sunnīs and Shī‘ah, Arabs and non-Arabs Turks and non-Turks. None has a privilege over another. The holy Qur’an regards piety the only criterion (for distinction.) However, no distinction is awarded based on material considerations.All people are equal and the rights of all strata of the people will be granted to them.
Sahifeh-ye-Imam, vol. 6, p. 409