Translation of the verse 48 from Surah Al-Mursalat : Number of verses 50 - - page 581 - Part 29.
And when it is said to them: "Bow down yourself (in prayer)!" They bow not down (offer not their prayers).
And when it is said to them, "Bow [in prayer]," they do not bow.
(77:48) When it is said to them: 'Bow down (before Allah),' they do not bow down. *26
*26) "Bowing before Allah": does not only imply worshipping Him but also means believing in the Messenger sent by Allah and in the Book revealed by Him and following and obeying His Commands.
Source : Al-Mursalat Verse 48: And when it is said to them, "Bow [in prayer]," they do not bow.