بسم الله الرحمن الرحيم
The Religion of Truth (deen-ul-Haqq)

The religion of Allāh, Islām, has also been referred to by many other honourable names (from the Qu'ān and Sunnah). Amongst them is the 'deen-ul-fitrah' (Innate Religion) and 'deen-ul-Haqq' (Religion of Truth).  Below is a summary of some of the points regarding the 'deen-ul-Haqq'

Allāh (subhānahu wa ta`ālā) said: "It is He (Allāh) who has sent His Messenger with hudā (guidance) and the deen-ul-Haqq (religion of truth), that He may make it prevail over all other religions, no matter how much the disbelievers detest it."  (Al-tawbah 9:33 and Al-Saff 61:9)

Similarly, in another noble āyah, Allāh said: "It is He (Allāh) who has sent His Messenger with hudā (guidance) and the deen-ul-Haqq (religion of truth), that He may make it prevail over all other religions.  And sufficient is Allāh as Witness."  (Al-fat'H, 48:28)[1]

In the above verses, 'hudā' refers to the true narrations, beneficial faith and true religion that the Messenger came with and 'deen-ul-Haqq' refers to the righteous, legal deeds that bring about benefit in this life and the Hereafter.  Indeed, the Islāmic Sharee`ah has two factors, knowledge and deeds.  The news and creed that this religion conveys are true and its commandments are just,

Furthermore, in the above verses, Allāh said He will make Islām superior over all religions.  The Messenger of Allāh (sallAllāhu `alayhi wasallam) said, "Allāh made the eastern and western parts of the earth draw near for me to see and the rule of my Ummah will extend as far as I saw."  (Muslim, 4:2215)

Imām Ahmad recorded from Tamim Ad-Dāri that he said, "I heard the Messenger of Allāh saying, 'This matter (Islām) will keep spreading as far as the night and day reach, until Allāh will not leave a house made of mud or hair, but will make this religion enter it, while bringing might to a mighty person (a Muslim) and humiliation to a disgraced person (who rejects Islām).  Might with which Allāh elevates Islām (and its people) and disgrace with which Allāh humiliates disbelief (and its people)'."

Tamim Ad-Dāri, who was a Christian before Islām, used to say, "I have come to know the meaning of this Hadeeth in my own people.  Those who became Muslims among them acquired goodness, honour and might.  Disgrace, humiliation and Jizyah[2] befell those who remained disbelievers.''  (Ahmad, 4:103) 

In another noble Qur'ānic āyah, Allāh promised that He would cause the Ummah (followers) of the Prophet (sallAllāhu `alayhi wasallam) to become successors on earth, i.e., they would become the leaders and rulers of mankind, through whom He (subhānahu wa ta`ālā) would reform the world and to whom people would submit, so that they would have in exchange a safe security after their fear.

"Allāh has promised those among you who believe and do righteous good deeds, that He will certainly grant them succession in the land, as He granted it to those before them, and that He will grant them the authority to practise their religion which He has chosen for them.  And He will surely give them in exchange a safe security after their fear if they worship Me and do not associate anything with Me.  But whoever disbelieved after this, they are the rebellious."  (An-Noor 24:55)

The promise of Allāh is true, may He be glorified and exalted and to Him belongs all praise.  For He did not cause His Messenger to die until He had given him victory over Makkah, Khaybar, Bahrayn, all of the Arabian Peninsula and Yemen; and he took Jizyah[2] from the Zoroastrians of Hajar and from some of the border lands of Syria; and he exchanged gifts with Heraclius the ruler of Byzantium, the ruler of Egypt and Alexandria, the Muqawqis, the kings of Oman and An-Najashi of Abyssinia, who had become king after Ashamah, may Allāh have mercy on him and grant him honour. 

Then when the Messenger died, his successor (Khalifah) Abu Bakr As-Siddeeq (may Allāh be pleased with him) took over the reins of power and united the Ummah, preventing its disintegration.  He took control of the entire Arabian Peninsula, and he sent the Islāmic armies to the land of Persia, under the leadership of Khālid bin Al-Waleed (may Allāh be pleased with him), who conquered a part of it.  He sent another army under the leadership of Abu `Ubaydah (may Allāh be pleased with him) and the other commanders who came after him in the lands of Syria.  He sent a third army under the leadership of `Amr bin Al-`Ās (may Allāh be pleased with him) to Egypt.  Allāh enabled the army sent to Syria to conquer Busra and Damascus and their provinces the land of Hawran and its environs.  

Then the people of Islām were blessed that As-Siddeeq was inspired to appoint `Umar Al-Farooq as his successor (may Allāh be pleased with them), so he took the reins of power after him and did a perfect job.  During his time, the rest of Syria and Egypt, and most of Persia, were conquered.  Kisra was defeated and utterly humiliated, and he retreated to the furthest point of his kingdom.  Mighty Caesar was brought low, his rule over Syria was overthrown, and he retreated to Constantinople.  Their wealth was spent for the sake of Allāh, as the Messenger of Allāh had foretold and promised.  

During the rule of `Uthmān (may Allāh be pleased with him), the Islāmic domains spread to the furthest points of the earth, east and west.  The lands of the west were conquered as far as Cyprus and Andalusia, Kairouan and Sebta which adjoins the Atlantic Ocean.  Towards the east, the conquests extended as far as China.  Kisra was killed, his kingdom was utterly destroyed and the cities of Iraq, Khurasan and Al-Ahwaz were conquered.  Taxes were collected from the east and the west, and brought to the Commander of the faithful `Uthmān bin `Affān.  This was a blessing brought by his recitation and study of the Qur'ān, and his bringing the Ummah together to preserve and protect it. 

Finally, the Religion of Truth will again prevail prior to last days of the world.  Therefore, it is upon the Muslims to prepare themselves by turning to their Lord, holding on to His Book, following the Sunnah of His Prophet (sallAllāhu `alayhi wasallam), turning away from all that Allāh has made unlawful and uniting upon that with which He - the Most Perfect, Most High - is pleased. 

(Source/Reference: Tafseer Al-Qur'ān Al-Adheem - Imām Ismā`īl Ibn 'Umar Ibn Katheer)


[1] Also, a few verses earlier in this soorah, Allāh said: "Fight against those who believe not in Allāh, nor in the Last Day, nor forbid that which has been forbidden by Allāh and His Messenger, and those who acknowledge not the Religion of Truth among the People of the Scripture, until they pay the Jizyah with willing submission, and feel themselves subdued."  (Al-tawbah 9:29.  This verse was revealed on the ninth year of Hijrah and following this command of Allāh, the Prophet - sallAllāhu `alayhi wasallam - prepared his army to fight the Romans.  This was after the pagans were defeated, when the people entered Allāh's religion in large numbers and the Arabian Peninsula was secured under the Muslims' control.)
[2] Jizyah - poll tax required from non-Muslims living in an Islāmic state.  In the Islāmic state non-Muslims do not have the financial obligation of paying Zakāt, instead they are required to pay Jizyah.