Lawful Earning 28
To search for lawful earning is (ordained) compulsory after the compulsory commands.
--Tradition by Baihaqi. Narrator: Abdullah-b-Masud.
Unlawful Earning 28
Begging is not lawful except for three (persons): one who is in pressing poverty, or one who is involved in debt (and is unable to pay,) and the one who has heavy blood-dues (but no means to settle).
--Tradition by Abu Daud. Narrator: Anas. (Excerpt)