לִ֣ינִי ׀ הַלַּ֗יְלָה וְהָיָ֤ה בַבֹּ֙קֶר֙ אִם־יִגְאָלֵ֥ךְ טוֹב֙ יִגְאָ֔ל וְאִם־לֹ֨א יַחְפֹּ֧ץ לְגָֽאֳלֵ֛ךְ וּגְאַלְתִּ֥יךְ אָנֹ֖כִי חַי־יְהוָ֑ה שִׁכְבִ֖י עַד־הַבֹּֽקֶר׃
Manatili ka rito ngayong gabi; at pagdating ng umaga, kung tutubusin ka niya, mabuti, hayaan mong siya ang tumubos; ngunit kung ayaw niyang tubusin ka, ako ang tutubos sa iyo, kasintiyak na buháy ang Walang-Hanggan. Mahiga ka hanggang umaga.”
Rashi
Stay the night. Stay over [one more night] without a husband.
Ibn Ezra
"אם יגאלך טוב (if he will perform to thee the part of a kinsman, well):" Some say that "טוב" (Tov) was the name of the kinsman. However, if this were so, why does the text in the scroll later say, "Turn aside, sit down here, Ploni Almoni" (a certain someone)? Rather, its meaning is, if the kinsman will redeem you, it is good for you that he should redeem, because he is an important person.
Rashi
As Adonoy lives. She said to him, “You are dismissing me with words [i.e., excuses].” He jumped up and swore to her18‘חי ה is the Biblical form of an oath, as in I Shmuel 19:6. that he would not dismiss her with words. Some of our Rabbis said that he swore to his evil inclination, for his evil inclination was inciting him [by saying], “You are not married and she is not married; be intimate with her.” So he swore that he would not be intimate with her except with marriage.