Rabbi Chaim Kidar Matzliach Mazuz was born in Djerba on 26 Cheshvan 5672 (1911), the son of Rabbi Refael Mazuz, of a rabbinic family. From 1923 to 1930 he studied under Rabbi Rachamim Chai Chavita HaKohen, and he learned Kabbalah from Rabbi Refael Djami.

Ordained as a dayan, he moved to Tunis to head the Chevrat HaTalmud yeshiva and to sit on the rabbinical court, under Rabbi David Ben Baron and Rabbi Mordechai Amiyes Cohen, until the authorities closed it in 1958. Appointed a judge in the civil court, he resigned in 1961 when required to judge Jews by state law rather than Torah law, and earned his living as a housing broker while writing and teaching.

Tradition relates that the great kabbalist Rabbi Ovadia Hadaya in Jerusalem once received from him a long letter in a refined hand setting out a halachic treatise, and was struck by the depth of its author. In 1963 he founded the Kisse Rachamim yeshiva, named after his teacher, where he passed on the learning method of the Tunisian sages, attentive to every word of the Gemara, Rashi and Tosafot. His responsa, Ish Matzliach, remain a reference.

He was murdered in Tunis on 21 Tevet 5731 (1971). His son, Rabbi Meir Mazuz, carries on his work in Israel.