Translation of the verse 46 from Surah Yusuf : Number of verses 111 - - page 241 - Part 12.
(He said): "O Yusuf (Joseph), the man of truth! Explain to us (the dream) of seven fat cows whom seven lean ones were devouring, and of seven green ears of corn, and (seven) others dry, that I may return to the people, and that they may know."
[He said], "Joseph, O man of truth, explain to us about seven fat cows eaten by seven [that were] lean, and seven green spikes [of grain] and others [that were] dry - that I may return to the people; perhaps they will know [about you]."
(12:46) Going to Joseph, he said, "Joseph, O man of righteousness! *39 tell me the meaning of the dream of seven fat cows whom seven lean cows are devouring, and of seven green ears of corn and seven withered ones. Maybe I go back to those people and they might understand it. " *40
*39) The Arabic word pofeIoO (Siddiq) is used for the one who is an embodiment of truth and righteousness. Thus it shows that the butler had been so deeply impressed with the pure character of Prophet Joseph that even years had failed to blot it from his heart. (For its fuller meaning please refer to E.N. 99 of An-Nusa).
*40) That is, "They might understand your true worth and realize their own error in keeping you in prison without any just cause. And in a way I may get the opportunity of fulfilling the promise I made with you during my imprisonment. "