וַיְסַפֵּ֧ר שַֽׂר־הַמַּשְׁקִ֛ים אֶת־חֲלֹמ֖וֹ לְיוֹסֵ֑ף וַיֹּ֣אמֶר ל֔וֹ בַּחֲלוֹמִ֕י וְהִנֵּה־גֶ֖פֶן לְפָנָֽי׃
האָט דער אױבערטראַנקמײַסטער דערצײלט זײַן חלום צו יוֹספֿן, און ער האָט צו אים געזאָגט: מיר חלומט זיך, ערשט פֿאַר מיר איז אַ װײַנשטאָק,
Or HaChaim
בחלומי, "in my dream." Since he had dreamt the interpretation of his companion's dream, he now emphasised what he had seen in his own dream, i.e. the dream he had dreamt concerning himself.
Rabbeinu Bahya
בחלומי, והנה גפן לפני , “in my dream- behold there was a grapevine in front of me.” It behooves a person to be extremely careful when he begins to relate a dream he has dreamt. You note that the Chief of the butlers prefaced telling his dream with the words: “in my dream.” The word בחלומי is an expression of “recovering from a sickness and an expression denoting good health.” The expression is related to Isaiah 38,16 ותחלימני והחייני, “You have restored me to health and You have revived me.” Following the opening remark of the butler it is not surprising that he was saved from the dungeon and restored to his position. The Chief of the bakers made the mistake of saying אף, before commencing to relate his dream. The word אף, of course, refers to anger. As a result he was sentenced to death and was hanged.