Reference for Bava Batra 218:11

אמר רבי אלעזר לעולם ידבק אדם בטובים שהרי משה שנשא בת יתרו יצא ממנו יהונתן אהרן שנשא בת עמינדב יצא ממנו פנחס

him with Absalom. R. Eleazar said: One should always associate<span class="x" onmousemove="('comment',' Lit., 'cling to'. ');">³⁶</span> with good [people]; for behold, from Moses who married the daughter of Jethro,<span class="x" onmousemove="('comment',' The priest of Midian, an idolater. ');">³⁷</span> there descended Jonathan<span class="x" onmousemove="('comment',' An idolatrous priest. ');">³⁸</span>

Jastrow