The phrase means the same thing as the English saying "a tit for a tat", or trading something for something else. It can also mean the same thing as "an eye for an eye".
ð ə WORD_BOUNDARY f ɹ eɪ z WORD_BOUNDARY m iː n z WORD_BOUNDARY ð ə WORD_BOUNDARY s eɪ m WORD_BOUNDARY θ ɪ ŋ WORD_BOUNDARY æ z WORD_BOUNDARY ð ɪ WORD_BOUNDARY ɪ ŋ ɡ l ɪ ʃ WORD_BOUNDARY s eɪ ɪ ŋ WORD_BOUNDARY ʌ WORD_BOUNDARY t ɪ t WORD_BOUNDARY f ə ɹ ɹ ə WORD_BOUNDARY t æ t WORD_BOUNDARY ɔ ɹ WORD_BOUNDARY t ɹ eɪ d ɪ ŋ WORD_BOUNDARY s ʌ m θ ɪ ŋ WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY s ʌ m θ ɪ ŋ WORD_BOUNDARY ɛ l s WORD_BOUNDARY ɪ t WORD_BOUNDARY k æ n WORD_BOUNDARY ɔ l s oʊ WORD_BOUNDARY m iː n WORD_BOUNDARY ð ə WORD_BOUNDARY s eɪ m WORD_BOUNDARY θ ɪ ŋ WORD_BOUNDARY æ z WORD_BOUNDARY ʌ n WORD_BOUNDARY aɪ WORD_BOUNDARY f ə ɹ ɹ ə n WORD_BOUNDARY aɪ WORD_BOUNDARY