قُلْ سِيرُوا۟ فِى ٱلْأَرْضِ ثُمَّ ٱنظُرُوا۟ كَيْفَ كَانَ عَـٰقِبَةُ ٱلْمُكَذِّبِينَ
Qul seeroo fil ardi summan zuroo kaifa kaana 'aaqibatul mukazzibeen
Say, "Travel through the earth, then see what became of those who denied the truth."
A demand for an angel gets answered with a command to go outside and look at ruins. ʿĀqiba names what follows a thing rather than the thing itself, so what the traveller is sent to weigh is how these stories ended. The order of the two verbs carries weight as well: the walking comes first, and the judgment is asked for only afterwards.