Difference: Blameworthy and Praiseworthy
When it was said in the fifth verse (118) - ` had your Lord willed, He would have made all the people a single community' - the sense is that had it been the will of Allah, He would have made all human beings accept Islam by force. All of them would have then become nothing but Muslims without any difference remaining between them. But, such are the dictates of His wisdom that, in this world, Allah Ta` ala does not compel anyone to do something. Instead, He has entrusted man with a kind of choice under which he could do whatever good or bad he wishes to do. Then, human temperaments differ, ways differ and deeds differ. The outcome is that there always will be some people who would keep at loggerheads against the true faith - of course, with the exception of those whom Allah Ta` ala has blessed with His mercy, that is, those who have been following the noble prophets.
This tells us that ` difference' at this place means hostility and op-position to the true faith and the teachings of prophets. The difference based on Ijtihad, which is inevitable among religious authorities and jurists of Islam, an ongoing process since the period of the Sahabah, is not included under this purview, nor is it contrary to Divine mercy. In fact, it is the very dictate of Allah's wisdom and mercy. Those who have declared the differences among Mujtahid Imams to be counter to Mercy in terms of this verse, have done something which is itself counter to the context of this verse as well as counter to the consistent practice of the Sahabah and Tabi` in.
واللہُ سُبحَانہ و تعالیٰ اَعلم
And Allah is Pure and High and He knows everything best.
Allah, the Exalted, informs that He is able to make all of mankind one nation upon belief, or disbelief. This is just as He said,
(And had your Lord willed, those on earth would have believed, all of them together.) 10:99 Allah goes on to say,
(but they will not cease to disagree. Except him on whom your Lord has bestowed His mercy,) This means that people will always differ in religions, creeds, beliefs, opinions and sects. Concerning Allah's statement,
(Except him on whom your Lord has bestowed His mercy,) This means that those who have received the mercy of Allah by following the Messengers are excluded from this. They are those who adhere to what they are commanded in the religion by the Messengers of Allah. That has always been their characteristic until the coming of the finality of the Prophets and Messengers (Muhammad ). Those who received Allah's mercy are those who followed him, believed in him and supported him. Therefore, they succeeded by achieving happiness in this life and the Hereafter. They are the Saved Sect mentioned in the Hadith recorded in the Musnad and Sunan collections of Hadith. The routes of transmission of this Hadith all strengthen each other (in authenticity). In these narrations the Prophet said,
(Verily, the Jews split into seventy-one sects, and the Christians split into seventy-two sects, and this nation (of Muslims) will split into seventy-three sects. All of them will be in the Fire except one sect.) They (the Companions) said, "Who are they (the Saved Sect) O Messenger of Allah" He said,
(The sect that is upon what my Companions and I are upon.) Al-Hakim recorded this narration in his Mustadrak with this additional wording. Concerning Allah's statement,
(And the Word of your Lord has been fulfilled (His saying): "Surely, I shall fill Hell with Jinn and men all together.") Allah, the Exalted, informs that He precedes everything in His preordainment and decree, by His perfect knowledge and penetrating wisdom. The result of this decree is that from those whom He has created, some deserve the Paradise and some deserve the Hell Fire. From this decree is that He will fill the Hellfire with both mankind and Jinns. His is the profound evidence and the perfect wisdom. In the Two Sahihs it is recorded that Abu Hurayrah said that the Messenger of Allah said,
(Paradise and the Hellfire debated. Paradise said, `None will enter me except the weak and despised of the people.' The Hell- fire said, `I have inherited the haughty and the arrogant people.' Then Allah said to the Paradise, `You are My mercy and I grant mercy with you to whoever I wish.' Then He said to the Hellfire, `You are My torment and I take vengeance with you upon whoever I wish. I will fill each one of you.' However, the Paradise will always have more bounties, to such an extent that Allah will create more creatures to dwell in it and enjoy its extra bounties. The Hellfire will continue saying, `Are there anymore (to enter me),' until the Lord of might places His Foot over it. Then it (Hell) will say, "Enough, enough, by Your might!")