The four Quranic Verses in the Chapters: Iqra, an-Najm, as-Sajdah, and Fussilat; it is obligatory to prostrate oneself on hearing them recited.
AYAS OF SAJDAH
Meaning of AYAS OF SAJDAH in English
Advanced Islamic English dictionary. Расширенный исламский словарь английского языка. 2012