{He shall be in a life} meaning a livelihood {that is pleasing,} which he is pleased with, and it is Paradise.
﴿فَهُوَ فِي عيشة﴾ أَي: معيشة ﴿راضية﴾ قَدْ رَضِيَهَا وَهِيَ الْجَنَّةُ.