وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " إِنَّ حُسْنَ الظَّنِّ بِاللَّهِ عَزَّ وَجَلَّ مِنْ حُسْنِ عِبَادَةِ اللَّهِ " .
And the Prophet Muhammad (peace and blessings be upon him) said: Good expectation (of Allah) is also a part of good worship.