Praise be to Allah, and may peace and blessings be upon the Messenger of Allah. To proceed:
It is not permissible to attribute supposition to Allah تعالى, and it is not correct to say: “Live up to Allah’s expectation of you” or “Live up to Allah’s good opinion of you,” because this expression is not valid when referring to Allah, Glorified and Exalted.
It is not permissible to say that Allah تعالى supposed such and such, or had a good opinion of so-and-so, or similar expressions, because supposition in this unrestricted sense is not an attribute that may be affirmed of Allah تعالى.
This issue was presented to Shaykh Abd al-Rahman al-Barrak, may Allah preserve him, and he stated that using this expression is false and reprehensible. Therefore, it is not permissible to attribute supposition to Allah تعالى.
If the intention is to encourage a person to hope in Allah تعالى and to have a good belief in His grace and mercy, sound expressions may be used, such as:
These expressions concern the servant’s state with his Lord and do not involve attributing supposition to Allah تعالى.
It is not correct to say: “Live up to Allah’s expectation of you” or “Live up to Allah’s good opinion of you,” and it is not permissible to attribute supposition to Allah تعالى. It is preferable to replace these expressions with words indicating the servant’s good hope in his Lord, such as: “Have a good opinion of Allah, and hope for His grace and mercy.”
And Allah knows best.