When he arrived at Midian’s waters, he found a group of men watering [their flocks], and beside them two women keeping their flocks back, so he said, ‘What is the matter with you two?’ They said, ‘We cannot water [our flocks] until the shepherds take their sheep away: our father is a very old man.’
and then one of the two women approached him, walking shyly, and said, ‘My father is asking for you: he wants to reward you for watering our flocks for us.’ When Moses came to him and told him his story, the old man said, ‘Do not be afraid, you are safe now from people who do wrong.’
The father said, ‘I would like to marry you to one of these daughters of mine, on condition that you serve me for eight years: if you complete ten, it will be of your own free will. I do not intend to make things difficult for you: God willing, you will find I am a fair man.’
Moses said, ‘Let that be the agreement between us- whichever of the two terms I fulfil, let there be no injustice to me- God is witness to what we say.’