How sahabah makes their wealth?

this is only several example..

Umar Al-Khattab ra
• inherited 70.000 properties (farm) value at 160 million dinar

Utsman ‘Affan ra
• cash = 151,000 dinar + 1,000 dirham
• inherited properties along Aris dan Khaibar
• water supplies worth 200,000 dinar

Zubair Awwam ra
• cash = 50,000 dinar
• 1,000 horses for jihad
• 1,000 slaves

Amr Al-Ash ra
• cash = 300,000 dinar

Abdurrahman Auf ra
• more than all sahabah's wealth!!
• in one occassion during Rasulullah SAW periode,
he made an infaq of 40,000 dinar

condition during sahabah government

during Umar Al-Khattab ra (10 years service)
• Mu’adz bin Jabal told, in Yaman,
its difficult to find poor people that can accept zakat
(Al-Amwal)
• teacher in Madinah get paid 15 dinar/month
(Ash-Shinnawi, 2006)

during Umar ibnu Abdul Aziz ra (3 years service)
• Yahya bin Sa’id (an amil) said,
“when i want to distribte zakat, i cannot find any poor people.
Umar Abdul Aziz made it enough for everybody”.
(Ibnu Abdil Hakam, siroh Umar bin Abdul Azis)
• letter from Governor Bashrah,
“all the people live wealthy, and i am afraid they will become takabbur and arrogant.”
(Al-Amwal)

wealth is not a sin..