Qur'an 22:67

لِّكُلِّ أُمَّةٍ جَعَلْنَا مَنسَكًا هُمْ نَاسِكُوهُ ۖ فَلَا يُنَـٰزِعُنَّكَ فِى ٱلْأَمْرِ ۚ وَٱدْعُ إِلَىٰ رَبِّكَ ۖ إِنَّكَ لَعَلَىٰ هُدًى مُّسْتَقِيمٍ

Unto each nation have We given sacred rites which they are to perform; so let them not dispute with thee of the matter, but summon thou unto thy Lord. Lo! thou indeed followest right guidance.