But rather the infidels are busy in belying.
Those who disbelieve are plagued with denial
Yet the unbelievers still belie
Nay, those who disbelieve give the lie -
But those who disbelieved (are) in lying/denial/falsification
The disbelievers are infected with…
In fact the disbelievers are in denial
Nay, but those who disbelieve persist in rejecting the truth
But such disbelievers (persistently strive to) belie (the truth)
The truth is that the disbelievers are persisting in belying (the Divine Messages)
Nay! The disbelievers (persisted) in denying (Prophet Muhammad (Peace be upon him) and his Message of Islamic Monotheism)