ɪt wʌz dˈʊɹɹɪŋ ðɪs tˈɛnjɚ ðæt hiː bɪkˌeɪm nˈoʊn æz wˈʌn ʌvðə lˈiːdɪŋ ɹˈæbaɪz ʌv jˈʊɹɹəp fɔːɹ hɪz ˌɛɹuːdˈɪʃən ænd stɹˈɪkt ɐdhˈɪɹəns tə hˈælækə.
It was during this tenure that he became known as one of the leading rabbis of Europe for his erudition and strict adherence to halakha.