בְּאֵרָ֣ה בְנ֔וֹ אֲשֶׁ֣ר הֶגְלָ֔ה תִּלְּגַ֥ת פִּלְנְאֶ֖סֶר מֶ֣לֶךְ אַשֻּׁ֑ר ה֥וּא נָשִׂ֖יא לָרֽאוּבֵנִֽי׃
זײַן זון באֵרָה, װאָס תִּלגַת-פּלנֶסֶר דער מלך פֿון אַשור האָט פֿאַרטריבן; ער איז געװען דער פֿירשט פֿון די ראובֿנים.
Rashi
whom Tillegath Pilneser exiled He preceded Sannecherib, and this was their sequence: Pul was [king] when Menahem the son of Gadi was crowned (II Kings 15:19f.), and (ibid. verse 29): “...in the days of Pekah the son of Remaliah, Tiglath Pileser the king of Assyria came,” and in the days of Hoshea the son of Elah, Shalmaneser the king of Assyria came (ibid. 17:3), and in the days of Hezekiah was Sannecherib (ibid. 18:13), but our Rabbis explained (Sanh. 94a) that Pul and all the rest of them are identical with Sannecherib.
Rashi
he was the prince of the Reubenites at the time that Tiglath Pileser exiled him.