Verse 2

هُوَ ٱلَّذِى خَلَقَكُم مِّن طِينٍ ثُمَّ قَضَىٰٓ أَجَلًا وَأَجَلٌ مُّسَمًّى عِندَهُۥ ثُمَّ أَنتُمْ تَمْتَرُونَ

He is the One who created you from clay, then determined a specific lifespan and a lifespan only known to Him, however, you are all full of doubt.