وَقَدْ خَابَ مَن دَسَّاهَا
wa qad khaaba man dasaaha
And he has failed who instills it [with corruption].
khaaba – running after something and you didn’t get it. Dissapointment, failure.
The one who throws his Nafs into the dust – completely disregards it – is setting himself up for major disappoinment, loss and regret.
dassaa ha (daal, seen, seen) – one who completely disregarded their nafs/consciense. They didn’t care about what their nafs/conscience said to them.
أَيَحْسَبُ أَن لَّمْ يَرَهُ أَحَدٌDoes he Think no-one sees him?[Balad 90:7]
They have no balance in their Nafs (of spirituality and halal/permitted worldly matters – Either they’ve delved into too much haraam [forbidden] material poleasures, or they’ve made certain things haram [forbidden] for themselves – which were really permitted by Allah. Both of these are extremes.).
Whereas the Sun and Moon, Day and night have a balance. So this person is going against the balanced nature which Allah had made for him and all His creation.