Zubaidah bint Ja`far ibn al-Mansur endowment

Zubaydah bint Jaafar al-Mansur, the wife of the caliph Harun al-Rashid, ordered the digging of water channels connected to the rain falls, and she bought all the lands in the valley and nullified the farms and palms, and ordered that a water channel be opened in the mountains. It is equal to what the science of engineering has reached today in terms of development and progress, especially in the ability of the workers at the time to withdraw water over that long distance and through mountain heights and depressions, valleys, and deserts. Until reached the Grand Mosque in Makkah Al-Mukarramah, passing through the holy sites of Mina, Arafat, and Muzdalifah, and the traces of water channels still exist to this day in the foothills of the mountains, as if they were done yesterday, despite the passage of hundreds of years on them.

And based on the importance of endowments and their preservation, during the era of the founder, King Abdul Aziz - may Allah rest his soul - a special department was established for the administration of Al-Ain called (Ain Zubaydah) to fully supervise and restore the waterhole and its wells, and Sheikh Abdullah Al-Dahlawi undertook an order from King Abdul-Aziz to build Ain Zubaida for se