Al-A'raf 7:205
وَٱذْكُر رَّبَّكَ فِى نَفْسِكَ تَضَرُّعًا وَخِيفَةً وَدُونَ ٱلْجَهْرِ مِنَ ٱلْقَوْلِ بِٱلْغُدُوِّ وَٱلْـَٔاصَالِ وَلَا تَكُن مِّنَ ٱلْغَـٰفِلِينَ
Wathkur rabbaka fee nafsikatadarruAAan wakheefatan wadoona aljahri mina alqawli bilghuduwwiwal-asali wala takun mina alghafileen
"And remember your Lord within yourself in humility and in fear without being apparent in speech - in the mornings and the evenings. And do not be among the heedless."
Al-A'raf 7:205, translation by Sahih International
A short reflection
Remember your Lord within yourself, in humility and in fear, without raising your voice, morning and evening.