The consequences of straying from divine guidance

قَالَ بَصُرْتُ بِمَا لَمْ يَبْصُرُوا۟ بِهِۦ فَقَبَضْتُ قَبْضَةً مِّنْ أَثَرِ ٱلرَّسُولِ فَنَبَذْتُهَا وَكَذَٰلِكَ سَوَّلَتْ لِى نَفْسِى

He said, "I saw what they did not see, so I took a handful [of dust] from the track of the messenger and threw it, and thus did my soul entice me."