Consoling a Muslim neighbour

If you want to offer consolation to a Muslim for the death
of a relative, then you can encourage her with any nice words to be
patient, and remind her that this is the state of all creation, we must
all come to an end and die. If you would like an example of how Muslims
offer consolation for the loss of a dear one or relative, then you can
say: To Allaah belongs what He has taken and to Him belongs what He
gives, and everything has an appointed time with Him, so have patience
and seek reward (from Allaah).