Sura Luqmān 31:17

يَٰبُنَىَّ أَقِمِ ٱلصَّلَوٰةَ وَأْمُرْ بِٱلْمَعْرُوفِ وَٱنْهَ عَنِ ٱلْمُنكَرِ وَٱصْبِرْ عَلَىٰ مَآ أَصَابَكَ إِنَّ ذَٰلِكَ مِنْ عَزْمِ ٱلْأُمُورِ

yā-bunayya aqimi l-ṣalāta wa-ʾmur bil-maʿrūfi wa-anha ʿani l-munkari wa-iṣbir ʿalā mā aṣābaka inna dhālika min ʿazmi l-umūri

"O my son! establish regular prayer, enjoin what is just, and forbid what is wrong: and bear with patient constancy whatever betide thee; for this is firmness (of purpose) in (the conduct of) affairs.

Sura Luqmān 31:19

وَٱقْصِدْ فِى مَشْيِكَ وَٱغْضُضْ مِن صَوْتِكَ إِنَّ أَنكَرَ ٱلْأَصْوَٰتِ لَصَوْتُ ٱلْحَمِيرِ

wa-iqṣid fī mashyika wa-ighḍuḍ min ṣawtika inna ankara l-aṣwāti la-ṣawtu l-ḥamīri

"And be moderate in thy pace, and lower thy voice; for the harshest of sounds without doubt is the braying of the ass."