Surah As-Saffat, ayah 11

فَٱسۡتَفۡتِهِمۡ أَهُمۡ أَشَدُّ خَلۡقًا أَم مَّنۡ خَلَقۡنَآۚ إِنَّا خَلَقۡنَٰهُم مِّن طِينٖ لَّازِبِۭ ١١

Fastaftihim ahum ashaddu khalqan am man khalaqnā innā khalaqnāhum min tīnil lāzib

Then inquire of them, [O Muḥammad], "Are they a stronger [or more difficult] creation or those [others] We have created?" Indeed, We created them [i.e., men] from sticky clay.