וַֽיְדַבְּר֞וּ עַבְדֵ֤י שָׁאוּל֙ בְּאָזְנֵ֣י דָוִ֔ד אֶת־הַדְּבָרִ֖ים הָאֵ֑לֶּה וַיֹּ֣אמֶר דָּוִ֗ד הַֽנְקַלָּ֤ה בְעֵֽינֵיכֶם֙ הִתְחַתֵּ֣ן בַּמֶּ֔לֶךְ וְאָנֹכִ֖י אִֽישׁ־רָ֥שׁ וְנִקְלֶֽה׃
And Saul’s servants spoke those words in the ears of David. And David said: ‘Seemeth it to you a light thing to be the king’s son-in-law, seeing that I am a poor man, and lightly esteemed?’
Read halakhic rulings (Jewish law) on I Samuel 18:23: and classical halakhic sources.