Imam al-Sadiq (AS) said, ‘There are five things which if one where to lose just one of them it would render his life incomplete, his intellect short-lived, and his heart preoccupied. The first of these is health of the body; the second is security; the third is ample sustenance; the fourth is a compatible companion. [The narrator says], ‘I asked, ‘What is a compatible companion to which he replied, ‘The virtuous wife, the virtuous son and the virtuous friend. And the fifth one, which sums up these four things, is mild-temperedness.