Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:56:46

And they used to persist in the great violation,  

and they used to persist in the great sin, namely, idolatry.
القرآن:٥٦:٤٦

وَكَانُوا يُصِرُّونَ عَلَى الْحِنْثِ الْعَظِيمِ  

{وكانوا يصرون على الحنث} الذنب {العظيم} أي الشرك.