It is narrated from Sayyiduna Abu Umamah al-Bahili (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Since Adam (peace be upon him) was sent down from the heaven to the earth, there has been no shirk whose beginning was not the denial of divine decree (qadar), and no nation associated partners with Allah except through denying the decree. O Ummah, you too will be tested with this trial. So when you meet those people, be the ones who ask the questions, and do not let them gain the upper hand in matters of the religion, or else they will put doubts into your hearts."
Hadith Referenceالمعجم الأوسط / باب الميم / 7631
Hadith Gradingمحدثین:إسناده ضعيف لضعف سلم بن سالم
Hadith Takhrij«قال الهيثمي: فيه سلم بن سالم ضعفه جمهور الأئمة أحمد وابن المبارك ومن بعدهم وقال ابن عدي أرجو أنه لا بأس به «مجمع الزوائد ومنبع الفوائد، ج 7، ص 204»»