The correct spelling of the word "hadst portion of" can be confusing, but with some help from phonetic transcription, it's easy to understand. "Hadst" is an archaic form of the auxiliary verb "to have" and is pronounced /hædst/ with a short "a" sound. "Portion" is pronounced /ˈpɔːʃən/, with a long "o" and "sh" sound. To use the phrase correctly in a sentence, one could say, "Thou hadst portion of the pie," meaning "you had a part of the pie."