Al-Isra Verse 87

had it not been for the mercy of your Lord. Indeed, His favour upon you is immense.

nevertheless it is a mercy from your Lord, for His favor to you is truly great.

excepting by some mercy of thy Lord; surly His favour to thee is great.

if it were not for your Lord’s mercy: His favour to you has been truly great.

Except as a mercy from thy Lord verily His grace unto thee is ever great.

Except for Mercy from thy Lord; for his bounty is to thee (indeed) great.

(Whatever you have received) is nothing but grace from your Lord. Indeed His favour to you is great.

Unless your Lord have mercy. His blessings on you are great indeed.

Except the mercy of your Lord; indeed His munificence upon you (O dear Prophet Mohammed – peace and blessings be upon him) is extremely great.

except a mercy from your Lord. Indeed His grace has been great upon you.

But (you are one favored with) a great, special mercy from your Lord. His favor on you is great indeed.

But (it is) the special mercy from your Lord (that He will not do so); His grace and favour upon you is very great infact.

Except mercy from your Lord, that (E) His grace/favour/blessing was great on you.

Except the mercy of your Lord; indeed His munificence upon you (O dear Prophet Mohammed - peace and blessings be upon him) is extremely great.

Unless by a mercy from your Lord, verily, His grace towards you is great.

Except as a Mercy from your Lord. Verily! His Grace unto you (O Muhammad SAW) is ever great.

And if We please, We could certainly take away that which We have revealed to thee, then thou wouldst find none to please (thy cause) against Us --

But on account of mercy from your Lord-- surely His grace to you is abundant.

(It is naught) save mercy from thy Lord. Lo! His kindness unto thee was ever great.

except by the mercy of your Lord. He has certainly bestowed great favors on you.

except for Mercy from your Lord; for His favor to you is great indeed.

Except as a mercy from your Lord. Verily, His grace unto you is ever great.

except through the special mercy of your Lord. His favours towards you has been great indeed.

Except through a mercy from your Lord. His favors upon you have been great.

[it is] only -- but We have let it remain -- as a mercy from your Lord. Truly His favour to you is ever great, tremendous, for He has revealed to you and granted you the praiseworthy station as well as other [kinds of] merit.

And if We willed, We could surely take away that which We have revealed to you. Then you would find no protector for you against Us in that respect.

Except as a mercy from your Lord. Verily, His grace unto you is ever great.

Allah mentions the blessing and great bounty that He has bestowed upon His servant and Messenger Muhammad by revealing to Him the Noble Qur'an to which falsehood cannot come, from before it or behind it, (it is) sent down by the All-Wise, Worthy of all praise.

Ibn Mas`ud said,

"A red wind will come to the people, meaning at the end of time, from the direction of Syria, and there will be nothing left in a man's Mushaf (copy of the Qur'an) or in his heart, not even one Ayah."

Then Ibn Mas`ud recited;

وَلَيِن شِيْنَا لَنَذْهَبَنَّ بِالَّذِي أَوْحَيْنَا إِلَيْكَ

And if We willed, We could surely take away that which We have revealed to you.
Challenging by the Qur'an

Allah says;

قُل لَّيِنِ اجْتَمَعَتِ الاِنسُ وَالْجِنُّ عَلَى أَن يَأْتُواْ بِمِثْلِ هَـذَا الْقُرْانِ لَا يَأْتُونَ بِمِثْلِهِ وَلَوْ كَانَ بَعْضُهُمْ لِبَعْضٍ ظَهِيرًا