זֶה־לִּ֞י עֶשְׂרִ֣ים שָׁנָה֮ בְּבֵיתֶךָ֒ עֲבַדְתִּ֜יךָ אַרְבַּֽע־עֶשְׂרֵ֤ה שָׁנָה֙ בִּשְׁתֵּ֣י בְנֹתֶ֔יךָ וְשֵׁ֥שׁ שָׁנִ֖ים בְּצֹאנֶ֑ךָ וַתַּחֲלֵ֥ף אֶת־מַשְׂכֻּרְתִּ֖י עֲשֶׂ֥רֶת מֹנִֽים׃
Así he estado veinte años en tu casa: catorce años te serví por tus dos hijas, y seis años por tu ganado; y has mudado mi salario diez veces.
Avodah Zarah
Papa said: If a Tanna is uncertain about the details [of what exact year it is] let him ask a notary what year it is according to his reckoning and add twenty to it and he will find his calculation. As a mnemonic sign take the verse, “Thus I have been twenty years in Your house” (Genesis 31:41).