Quran 31:17

يَـٰبُنَىَّ أَقِمِ ٱلصَّلَوٰةَ وَأۡمُرۡ بِٱلۡمَعۡرُوفِ وَٱنۡهَ عَنِ ٱلۡمُنكَرِ وَٱصۡبِرۡ عَلَىٰ مَآ أَصَابَكَ‌ۖ إِنَّ ذَٲلِكَ مِنۡ عَزۡمِ ٱلۡأُمُورِ ١٧

"O my son, you shall observe the Salat (Contact Prayer). You shall advocate righteousness and forbid evil, and remain steadfast in the face of adversity. These are the most honorable traits.