Surah Al-Qiyamah, ayah 18

فَإِذَا قَرَأۡنَٰهُ فَٱتَّبِعۡ قُرۡءَانَهُۥ ١٨

Fa idhā qara'nāhu fattabi' qur'ānah

So when We have recited it [through Gabriel], then follow its recitation.