וַ֠יִּפְקֹד שַׂ֣ר הַטַּבָּחִ֧ים אֶת־יוֹסֵ֛ף אִתָּ֖ם וַיְשָׁ֣רֶת אֹתָ֑ם וַיִּהְי֥וּ יָמִ֖ים בְּמִשְׁמָֽר׃
e o capitão da guarda pô-los a cargo de José, que os servia. Assim estiveram por algum tempo em detenção.
Rashi on Genesis
ויפקד שר הטבחים את יוסף AND THE OFFICER OF THE EXECUTIONERS APPOINTED JOSEPH — to be WITH THEM (i.e. supply the word להיות to complete the sense).
Rashbam on Genesis
ויפקד שר הטבחים, he appointed him to look after all the needs of the various prisoners in that jail.
Radak on Genesis
ויפקוד, he appointed Joseph to be their constant companion and personal valet. We are told this so that we can understand why Joseph enjoyed their confidence and they told him their dreams.