Yaa cf. Yardna - Running water, river, a pool of flowing water. Yaa’ is the twenty-eight letter of the Arabic alphabet. It represents number ten and belongs to the element of air. It symbolizes God’s help. Shaykh ad-Dabbaagh informs us that the ‘yaa’ corresponds to the perfect fear of God, which is a part of prophecy. Cited from the website Chishti