﴿ وَسَوَآءٌ عَلَيْهِمْ ءَأَنذَرْتَهُمْ أَمْ لَمْ تُنذِرْهُمْ لَا يُؤْمِنُونَ ﴾

“thus, it is all one to them whether thou warnest them or dost not warn them: they will not believe.”

And it is the same to them whether you warn them read a-andhartuhum pronouncing both hamzas; or by substituting an alif for the second one; or by not pronouncing the second one but inserting an alif between the one not pronounced and the other one or without the insertion or do not warn them they will not believe.