Illegal sources of income scrupulous analysis in the light of Islamic finance perspective

From Quranic point of view only that income is lawful which is the result of human labour only, except that any income from any source is not admitted by Quran? Whereas the illegal sources of income are concerned Quran has divided them in two categories first al-riba and the second is batil income. From Quranic point of view al-riba is the reward of any asset in any form and quantity also regardless of purpose and place of letting the assets. Whereas the latter is concerned Quran has used it for all those sources of income which are considered as illegal. Quran has strictly prohibited both al-riba and batil income.