Commentary for II Samuel 2:29

וְאַבְנֵ֣ר וַֽאֲנָשָׁ֗יו הָֽלְכוּ֙ בָּֽעֲרָבָ֔ה כֹּ֖ל הַלַּ֣יְלָה הַה֑וּא וַיַּעַבְר֣וּ אֶת־הַיַּרְדֵּ֗ן וַיֵּֽלְכוּ֙ כָּל־הַבִּתְר֔וֹן וַיָּבֹ֖אוּ מַחֲנָֽיִם׃

And Abner and his men went all that night through the Arabah; and they passed over the Jordan, and went through all Bithron, and came to Mahanaim.

Rashi on II Samuel