Targum su Genesi 40:23

But because, Joseph had withdrawn from the mercy that is above, and had put his confidence in the chief butler, he waited on the flesh. Therefore the chief butler did not remember Joseph, but forgat him, until from the Lord came the time of the end that he should be released.

Joseph left the mercy above, and the mercy beneath, and the mercy which accompanied him from his father's house, and put his confidence in the chief butler: he trusted in the flesh, and the flesh be tasted of, even the cup of death. Neither did he remember the scripture where it is written expressly, Cursed shall be the man who trusteth in the flesh, and setteth the flesh as his confidence. Blessed shall be the man who trusteth in the Name of the Word of the Lord, and whose confidence is the Word of the Lord. Therefore the chief butler did not remember Joseph, but forgat him, until the time of the end came that he should be released.