וְלֹ֣א תִהְיֶ֣ה זֹ֣את ׀ לְךָ֡ לְפוּקָה֩ וּלְמִכְשׁ֨וֹל לֵ֜ב לַאדֹנִ֗י וְלִשְׁפָּךְ־דָּם֙ חִנָּ֔ם וּלְהוֹשִׁ֥יעַ אֲדֹנִ֖י ל֑וֹ וְהֵיטִ֤ב יְהוָה֙ לַֽאדֹנִ֔י וְזָכַרְתָּ֖ אֶת־אֲמָתֶֽךָ׃ (ס)
that this shall be no stumbling-block unto thee, nor offence of heart unto my lord, either that thou hast shed blood without cause, or that my lord hath found redress for himself. And when the LORD shall have dealt well with my lord, then remember thy handmaid.’
Rashi on I Samuel
That this not be…an obstacle. As a stumbling block, as in, 'and the stumbling [לְפִיק] of the knees';21Nachum 2:11. for had you done this, you would not be able to open your mouth to reprove anyone in future generations, concerning bloodshed.
Rashi on I Samuel
And that my master has avenged himself. That you avenge yourself.