﴿ فَسَبِّحْ بِحَمْدِ رَبِّكَ وَكُن مِّنَ ٱلسَّٰجِدِينَ ﴾

“but extol thou thy Sustainer's limitless glory and praise Him, and be of those who prostrate themselves [before Him] in adoration,”

(But hymn the praise of thy Lord) pray by the command of your Lord, (and be of those who make prostration (unto Him)) of those who prostrate to Him; it is also said that this means: of those who are obedient to Him.