And we have mentioned his conditions, signs, name and lineage, and declared that the great grandfather of the Mahdi, the Messenger of Allah (s.a.w.s.) had named him and mentioned his Kunniyat, so that no one can say that he was unaware of his name, Kunniyat and lineage. By Allah, his name, Kunniyat and lineage will be talked of by all and each will mention it to others. And that will be the great decisive proof on them.
After that the Almighty Allah will make him appear according to the promise of his grandfather, the Messenger of Allah (s.a.w.s.).
Thus the Almighty Allah Himself says: هُوَ الَّذِي أَرْسَلَ رَسُولَهُ بِالْهُدَى وَدِينِ الْحَقِّ لِيُظْهِرَهُ عَلَى الدِّينِ كُلِّهِ وَلَوْ كَرِهَ الْمُشْرِكُونَ “He it is Who sent His Apostle with guidance and the religion of truth, that He might cause it to prevail over all religions, though the polytheists may be averse.” (Surah Taubah 9:33) Mufaddal says: I asked: My master what is the meaning of the verse: “that He might cause it to prevail over all religions, though the polytheists may be averse?” Please explain it to me.
Imam (a.s.) said: Its interpretation is present in the following statement of the Almighty Allah: وَقَاتِلُوهُمْ حَتَّى لاَ تَكُونَ فِتْنَةٌ وَيَكُونَ الدِّينُ كُلُّهُ لِلّه “And fight with them until there is no more persecution and religion should be only for Allah…” (Surah Anfal 8:39) By Allah, at that time all the differences of sects and religions will be gone and all will have the same faith, as the Almighty Allah says: إِنَّ الدِّينَ عِندَ اللّهِ الإِسْلاَمُ “Surely the (true) religion with Allah is Islam…” (Surah Aale Imran 3:19 Also He says: وَمَن يَبْتَغِ غَيْرَ الإِسْلاَمِ دِينًا فَلَن يُقْبَلَ مِنْهُ وَهُوَ فِي الآخِرَةِ مِنَ الْخَاسِرِينَ “And whoever desires a religion other than Islam, it shall not be accepted from him, and in the hereafter he shall be one of the losers.” (Surah Aale Imran 3:85) Mufaddal says: I asked: My master, was the religion of your forefathers, Ibrahim, Nuh, Musa and Muhammad Islam?
He replied: Yes, O Mufaddal, it was Islam and nothing else. Mufaddal says: I asked: My master, is there any mention of it in the Holy Quran? He replied: Yes, from the beginning to the end; it is mentioned in the Holy Quran.