Quran 7:205 from Surah Al-A'raaf on Divine Marvels.
وَٱذۡكُر رَّبَّكَ فِي نَفۡسِكَ تَضَرُّعٗا وَخِيفَةٗ وَدُونَ ٱلۡجَهۡرِ مِنَ ٱلۡقَوۡلِ بِٱلۡغُدُوِّ وَٱلۡأٓصَالِ وَلَا تَكُن مِّنَ ٱلۡغَٰفِلِينَ
English translation: And remember your Lord in yourself humbly and (in) fear and without the loudness of [the] words in the mornings and (in) the evenings And (do) not be among the heedless
Transliteration: wa-udh'kur rabbaka fi nafsika tadarru'an wakhifatan waduna al-jahri mina al-qawli bil-ghuduwi wal-asali wala takun mina al-ghafilina