Surah Al-Qasas (The Stories), Verse 27

قَالَ اِنِّیْۤ اُرِیْدُ اَنْ اُنْكِحَكَ اِحْدَی ابْنَتَیَّ هٰتَیْنِ عَلٰۤی اَنْ تَاْجُرَنِیْ ثَمٰنِیَ حِجَجٍ فَاِنْ اَتْمَمْتَ عَشْرًا فَمِنْ عِنْدِكَ وَمَاۤ اُرِیْدُ اَنْ اَشُقَّ عَلَیْكَ سَتَجِدُنِیْۤ اِنْ شَآءَ اللّٰهُ مِنَ الصّٰلِحِیْنَ ۟

Qaala innee ureedu an unkihaka ihdab nataiya haataini 'alaaa an taajuranee samaaniya hijaj; fa in atmamta 'ashran famin 'indika wa maaa ureedu an ashuqqa 'alaik; satajiduneee in shaaa'al laahu minas saaliheen

“He said: "I intend to wed one of these my daughters to thee, on condition that thou serve me for eight years; but if thou complete ten years, it will be (grace) from thee. But I intend not to place thee under a difficulty: thou wilt find me, indeed, if Allah wills, one of the righteous."”

Quran 28:27 (Yusuf Ali Translation)