TgJ Jer3:6 :דְמִתחַסְנִין "<כמו חסינא פי׳ שהם מקשים לבם לשוב אלי>" לִמתָב לְפֻלְחָנִי‏ : those who refuse to return to my worship [explained in some ms. traditions as: "like 'strong', meaning that they strengthen their heart to return to Me"]
See the entire entry for ḥsn vb. to be strong