Qur'an 28:23

وَلَمَّا وَرَدَ مَآءَ مَدْيَنَ وَجَدَ عَلَيْهِ أُمَّةً مِّنَ ٱلنَّاسِ يَسْقُونَ وَوَجَدَ مِن دُونِهِمُ ٱمْرَأَتَيْنِ تَذُودَانِ ۖ قَالَ مَا خَطْبُكُمَا ۖ قَالَتَا لَا نَسْقِى حَتَّىٰ يُصْدِرَ ٱلرِّعَآءُ ۖ وَأَبُونَا شَيْخٌ كَبِيرٌ

And when he came unto the water of Midian he found there a whole tribe of men, watering. And he found apart from them two women keeping back (their flocks). He said: What aileth you? The two said: We cannot give (our flocks) to drink till the shepherds return from the water; and our father is a very old man.