All 15 ayahs across the Quran where reciting or hearing the verse calls for a recitation sajda (prostration).
This is a recitation sajda (sajdat al-tilawah) — a single prostration performed when reciting or hearing these ayahs, distinct from the sajdas within the 5 daily prayers. Scholars differ slightly on whether it is obligatory or highly recommended (sunnah mu'akkadah); consult a qualified scholar if unsure.