Read Surah Hud 11:62: "They answered: "O Salih! Great hopes did we place in thee ere this! Wouldst thou forbid us to worship what our forefathe..." Full Arabic text, English translation, and image generator.
قَالُوا يَا صَالِحُ قَدْ كُنْتَ فِينَا مَرْجُوًّا قَبْلَ هَٰذَا ۖ أَتَنْهَانَا أَنْ نَعْبُدَ مَا يَعْبُدُ آبَاؤُنَا وَإِنَّنَا لَفِي شَكٍّ مِمَّا تَدْعُونَا إِلَيْهِ مُرِيبٍ
They answered: "O Salih! Great hopes did we place in thee ere this! Wouldst thou forbid us to worship what our forefathers were wont to worship? Because [of this], behold, we are in grave doubt, amounting to suspicion, about [the meaning of] thy call to us!"