What are the regulations for producing animated films of the Holy Quran's stories for children, and is it permissible to mention events not stated in the Quran or authentic Sunnah for the purpose of understanding the context, or to include phrases of disbelief uttered by disbelievers like Pharaoh?

Mentioning things that are understood from the context of Quranic stories, even without explicit text, is not religiously prohibited for the purpose of making the story more accessible to children's minds and suitable for their cognitive abilities, especially given the need for Muslim children to have a beneficial alternative. Even if a slight falsehood is assumed, the intended benefit outweighs it. Furthermore, narrating the words of an infidel or a transgressor for a valid purpose is religiously permissible, as evidenced by the Quran's narration of the words of disbelievers. The narrator in this case does not attribute it to himself but rather recounts it, and whoever recounts disbelief that he heard without believing in it does not become a disbeliever.