A receipt stands for proof of an exchange that already took place. It is traditionally read as the wish to account for what was given and received, or to keep a record of the past.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.