«وَلَا تُؤْمِنُوا إِلَّا لِمَنْ تَبِعَ دِينَكُمْ»
“Do not trust anyone except one who follows your religion.” (Āl ʿImrān 3:73, excerpt)
«قُلْ إِنَّ الْهُدَىٰ هُدَى اللَّهِ»
“Say: Indeed, the guidance is God’s guidance.” (Āl ʿImrān 3:73, excerpt)
The first statement belongs to a reported strategy or declaration; “say” introduces a divine response. Unless the boundaries of speech are distinguished, the reader could mistakenly attribute both statements to the same speaker.
A basic interpretive habit is to ask who is speaking, who is addressed and where quoted speech changes into response. This is especially important in verses that move between competing claims.