The Holy Prophet Muhammad, peace and blessings of Allah be upon him, said:
“Allah the Exalted says, ‘I am as my slave expects me to be, and I am with him when he remembers Me. If he remembers Me inwardly, I will remember him inwardly, and if he remembers Me in an assembly, I will remember him in a better assembly [i.e., in the assembly of angels].”
(Sahih al-Bukhari and Muslim)