(Al-An'aam) 6 : 19
قُلْ أَيُّ شَيْءٍ أَكْبَرُ شَهَادَةً ۖ قُلِ اللَّهُ ۖ شَهِيدٌ بَيْنِي وَبَيْنَكُمْ ۚ وَأُوحِيَ إِلَيَّ هَٰذَا الْقُرْآنُ لِأُنْذِرَكُمْ بِهِ وَمَنْ بَلَغَ ۚ أَئِنَّكُمْ لَتَشْهَدُونَ أَنَّ مَعَ اللَّهِ آلِهَةً أُخْرَىٰ ۚ قُلْ لَا أَشْهَدُ ۚ قُلْ إِنَّمَا هُوَ إِلَٰهٌ وَاحِدٌ وَإِنَّنِي بَرِيءٌ مِمَّا تُشْرِكُونَ

You Ask: "Which is the greatest witness?" You say: "Lord Allah’s. He is the witness between you and me, and this Reading inspired me to warn you with It as well as anyone It will reach; are you witnessing that there are other deities with Allah?" You say: "I will not witness!" You say: "Indeed, He is the Only Deity, and surely I am innocent from whatever you are associating with".

When it is asked about the greatest witness to the disbelievers during Messenger's time, they remained silent. Then the Messenger and believers are ordered to say to them that the Manifest Reading Adhikr is the greatest Witness. It is told in verse 16: 44: "Lord has sent down into the Messenger Adhikr to explain upon mankind what is sent down to them and that they may meditate and reflect". Messenger is commanded to say through verse 18: 110: "Indeed I am only a man like you, I have been revealed that indeed your Deity is the Single Deity; so whoever expects the meeting with his Lord, he may do righteous deeds and don't associate others in the dominion of his Lord". Lord sends down Angels with His Command upon whom he wishes of His servants to warn them that there is no deity except Him and to heed Him as explained in verse 16: 2. All 313 Messengers are sent down with Adhikr to teach mankind that there is no Deity except the Lord, and so serve Him only as explained in verses 21: 24-25. 

Today, as the Witness Adhikr is codified through the Three-Time-Knower mentioned in verse 25: 59, and so whoever from the Arabic Quran reading Fujjar hides or rejects It, then the Fire is promised to him as explained in verse 11: 17. The believer is commanded to say the Fujjar through verse 17: 96: "Sufficient is Lord as a Witness between you and me; indeed enough is your Lord to acquaint and observe upon His servants”, and in verse 29: 52 it is told "Sufficient is Lord between you and me as a Witness, He knows what is in the heavens and earth, and they who have believed in falsehood and disbelieved in Lord, they are the losers". The Fujjar are not considering Lord Allah as Adhikr submits. By hiding from mankind even the forty names of Adhikr, they have become the transgressors as explained in verse 2: 99. See explanation 2: 113, 140; 3: 18, 70, and 5: 117.