פירוש על בראשית 40:23

ולא זכר שר המשקים AND THE CHIEF OF THE BUTLERS DID NOT REMEMBER HIM on that day,

ולא זכר שר המשקים את יוסף, as soon as he came out of prison. Joseph had asked him to remember his case as soon as he would come out of prison, but he did not remember.

ולא זכר שר המשקים את יוסף, and the chief butler did not remember Joseph, etc. This means that although he had not yet forgotten him, he did not remember him either. At the beginning he simply did not recall Joseph's name, something that Joseph had asked him to remember.