18th Ayah from Surah Al Qiyamah
So when We have recited it [through Gabriel], then follow its recitation.
When We have recited it, repeat the recitation
And when We have recited it to you [O Muhammad SAW through Jibrael (Gabriel)], then follow you its (the Quran's) recital.
Therefore, when it is recited by Us (through the angel), follow its recitation (by concentration of your heart).
And when We read it, follow thou the reading;
But when We have promulgated it, follow thou its recital (as promulgated):