וַתֹּ֙אמֶר֙ שְׁבִ֣י בִתִּ֔י עַ֚ד אֲשֶׁ֣ר תֵּֽדְעִ֔ין אֵ֖יךְ יִפֹּ֣ל דָּבָ֑ר כִּ֣י לֹ֤א יִשְׁקֹט֙ הָאִ֔ישׁ כִּֽי־אִם־כִּלָּ֥ה הַדָּבָ֖ר הַיּֽוֹם׃
At sinabi niya: “Maghintay ka lang dito, anak ko, hanggang malaman mo kung paano magtatapos ang bagay na ito; sapagkat hindi titigil ang lalaking iyon hangga't hindi niya natatapos ang bagay na ito ngayong araw.”
Rashi
So shall you do Because of alacrity, caution, and encouragement, he added a “nun,” like (Gen. 32: 5): “So shall you say (תאמְרוּן),” and like (Ruth 2:8f.): “and here you shall stay (תִדְבָּקִין) with my maidens. Your eyes shall be on the field that they reap (יִִִקְצרוּן),” and like (ibid. 3:18): “until you know (תֵּדְעִין) how the matter will be resolved, for the man will not rest, etc.”