It is narrated from Imam Hussain (AS) who said:

I recommend to you Divine Piety, because Allah (SWT) has guaranteed to transform unpleasantness and difficulty into pleasantness and happiness for those who fear God, and grant them sustenance through ways which they cannot imagine [1].

[1] Beharul Anwaar, Vol. 75, Page 121.

Source: en.shafaqna.com