Translated transcript follows. Image courtesy of Wikimedia.
Recommended reading: The Amarna Letters.
To the king, my lord.
Message of Ayyab, your servant.
I fall at the feet of my lord 7 times and 7 times. I am the servant of the king, my lord, the dirt at his feet. I have heard what the king, my lord, wrote to me through Atahmaya. Truly, I have guarded very carefully, the cities of the king, my lord. Moreover, note that it is the ruler of Hasura who has taken 3 cities from me. From the time I heard and verified this, there has been waging of war against him. Truly, may the king, my lord, take cognizance, and may the king, my lord, give thought to his servant.