Hadithcore
Sunan Abi Dawud, 4619
sahih· Al-Albani

Humaid al-Tawil asked al-Hasan about the verse:

“Even so do We let it creep into the hearts of the sinners.” He said: Polytheism

حَدَّثَنَا ابْنُ كَثِيرٍ، قَالَ أَخْبَرَنَا سُفْيَانُ، عَنْ حُمَيْدٍ الطَّوِيلِ، عَنِ الْحَسَنِ، ‏{‏ كَذَلِكَ نَسْلُكُهُ فِي قُلُوبِ الْمُجْرِمِينَ ‏}‏ قَالَ الشِّرْكُ ‏.‏

References2 variants
In-Book Reference
Book 42, Hadith 24
English Reference
Book 41, Hadith 4602