فَإِن
فَإِن
لَّمْ
not
تَفْعَلُوا۟
you do
وَلَن
and never
تَفْعَلُوا۟
will you do
فَٱتَّقُوا۟
then fear
ٱلنَّارَ
the Fire
ٱلَّتِى
whose
وَقُودُهَا
[its] fuel
ٱلنَّاسُ
(is) [the] men
وَٱلْحِجَارَةُ ۖ
and [the] stones
أُعِدَّتْ
prepared
لِلْكَـٰفِرِينَ
for the disbelievers
فَإِن لَّمْ تَفْعَلُوا۟ وَلَن تَفْعَلُوا۟ فَٱتَّقُوا۟ ٱلنَّارَ ٱلَّتِى وَقُودُهَا ٱلنَّاسُ وَٱلْحِجَارَةُ ۖ أُعِدَّتْ لِلْكَـٰفِرِينَ
But if you are unable to do so—and you will never be able to do so—then fear the Fire fuelled with people and stones, which is prepared for the disbelievers.