The first asset that Satan caused Job to lose was his livestock. Those animals were valuable, likely his livelihood. But Job also used them in worship.
(‏ اي ١ :‏ ​ ٤ ،‏ ٥‏ )‏ وَهذَا يَعْنِي أَنَّ أَيُّوبَ قَرَّبَ ٱلذَّبَائِحَ لِيَهْوَه بِٱنْتِظَامٍ .‏