For each congregation, we have decreed a set of rites that they must uphold. Therefore, they should not dispute with you. You shall continue to invite everyone to your Lord. Most assuredly, you are on the right path.
لِكُلِّ أُمَّةٍ جَعَلنا مَنسَكًا هُم ناسِكوهُ فَلا يُنٰزِعُنَّكَ فِى الأَمرِ وَادعُ إِلىٰ رَبِّكَ إِنَّكَ لَعَلىٰ هُدًى مُستَقيمٍ
likulli ummatin ja’alnaa mansakan hum naasikoohu falaa yunaazi ‘unnaka fil amr; wad’u ilaa Rabbika innaka la ‘alaa hudan mustaqeem