Is the statement of Allāh “Say: “This is my way; I invite to Allāh upon al-Basīrah (clear insight and correct knowledge), I and whoever follows me…” [12:108] an evidence for the prohibition of working with the people of innovation in the field of Da’wah?

Shaykh Sāliḥ al-Fawzān:

Yes. Da’wah is not to be done with innovation or with the people of innovation, and they are not to be cooperated with. He ﷺ said “And beware of newly invented matters, for every newly invented matter is an innovation, and every innovation is misguidance”. It is not permissible to cooperate with the people of innovation. Rather, it is obligatory to avoid them and to refute them.