Quran 2:238 from Surah Al-Baqara on Divine Marvels.
حَٰفِظُواْ عَلَى ٱلصَّلَوَٰتِ وَٱلصَّلَوٰةِ ٱلۡوُسۡطَىٰ وَقُومُواْ لِلَّهِ قَٰنِتِينَ
English translation: Guard strictly [on] the prayers and the prayer [the] middle and stand up for Allah devoutly obedient
Transliteration: hafizu ala al-salawati wal-salati al-wus'ta waqumu lillahi qanitina