וַיֶּאֱהַ֥ב יַעֲקֹ֖ב אֶת־רָחֵ֑ל וַיֹּ֗אמֶר אֶֽעֱבָדְךָ֙ שֶׁ֣בַע שָׁנִ֔ים בְּרָחֵ֥ל בִּתְּךָ֖ הַקְּטַנָּֽה׃
And Jacob loved Rachel; and he said: ‘I will serve thee seven years for Rachel thy younger daughter.’
Read halakhic rulings (Jewish law) on Genesis 29:18: and classical halakhic sources.