הַיּוֹם יוֹשֵׁב בְּחֵיקוֹ שֶׁל אַבְרָהָם הַיּוֹם נוֹלַד רַב יְהוּדָה בְּבָבֶל

Today he is sitting in the lap of Abraham our forefather, since he has just been circumcised. He added: Today Rav Yehuda was born in Babylonia.