Equal social status is not a condition for marriage in Islam. There can be no doubt that, for Muslims, religion is the most important consideration when it comes to choosing a suitable marriage partner.
Allah says: "Do not marry idolatresses until they believe; for lo! a believing bondwoman is better than an idolatress though she please you; and give not your daughters in marriage to idolaters till they believe, for lo! a believing slave is better than an idolater though he please you." [Sūrah al-Baqarah
Even when a Muslim man marries a Jewish or Christian woman, her chastity and the uprightness of her character are still important considerations.
We can see this where Allah says: "(Lawful unto you in marriage) are (not only) chaste women who are believers, but chaste women among the People of the Book, revealed before your time,- when ye give them their due dowers, and desire chastity, not lewdness, nor secret intrigues" [Sūrah al-Mā'idah
As for equality other matters – like race, ethnicity, and economic status – this is not legally recognized as a condition for marriage in Islamic Law. All people are equal to each other, regardless of how they might differ in these matters.
Allah makes it clear that our status in Islam is based solely on righteousness: "Indeed, the most honorable of you with Allah are those who are the most God-fearing among you." [Sūrah al-Hujurāt
The Prophet (peace be upon him) said: "Human beings are equal. There is no preference of an Arab over a non-Arab. Preference is only through piety." [Musnad Ahmad
We see where the Prophet (peace be upon him) put this principle into practice when he advised Fātimah bint Qays to marry the freed slave Usāmah b. Zayd when she came to him for his opinion on her marrying her social equals Mu`āwiyah and Abū Jahm. [Sahīh Muslim
Fātimah bint Qays relates the following:
I mentioned to the Prophet that Mū`āwiyah b. Abū Sufyān and Abū Jahm have sought my hand in marriage.
Allah's Messenger (peace be upon him) said: "As for Abū Jahm, he never spares the rod, and as for Mu`āwiyah, he is a loafer who never has any money. Marry Usāmah b. Zayd."
I disliked him, but the Prophet (peace be upon him) advised me again. "Marry Usāmah b. Zayd."
I did so, and Allah brought about tremendous good from it.
When the Prophet (peace be upon him) said: "He never spares the rod", it means that he was known to be a wife-beater and wiould be likely to beat her if she became his wife.
Usāmah b. Zayd b. Hārithah was a freed slave, and therefore he had absolutely no social status in society. Both Mu`āwiyah and Abū Jahm were of noble breeding and were her social equals. In both cases, the Prophet (peace be upon him) faults them for their characters.
This hadīth is clear evidence that equal social status is not a condition for marriage in Islam.
We have in another authentic hadith where the Prophet (peace be upon him) advised: "O clan of Bayādah, have her marry Abū Hind." [Sunan Abī Dāwūd
Abū Hind worked as a cupper, carrying out the procedure of medicinal bloodletting, which was an occupation of very low status in Arabian society at that time.
We cannot say the same thing for the hadīth which claims that the Prophet (peace be upon him) said: "Arabs are the equals of each other." [Sunan al-Bayhaqī
The chain of transmission for this hadīth is extremely weak. The hadīth scholar Abū Hātim al-Rāzī goes as far as to say it is a falsehood (munkar
At the same time, we must acknowledge that, when it comes to issues of selecting a marriage partner, cultural standards are important. They should be taken into consideration as long as they do not contradict with Islamic teachings. When people get married who have dissimilar economic or cultural expectations, it can lead to problems in their lives as well as between the in-laws. Divorce becomes more likely, as well as strife over monetary matters.
Incompatible matches, for whatever reason, should be avoided. However, it is a mistake to treat social status, ethnicity, and cultural similarity as if they were conditions of a legally valid marriage, or to allege that the marriage of people who differ in these considerations is frowned upon in Islamic Law. Consideration of such factors is merely a question of personal preference, compatibility, mutual understanding, and of making a happy marriage choice.
And Allah knows best.