When Rustem had drunk in the counsels of his father he seated him on Rakush the fleet of foot. But when he would have departed, his mother came out before him, and she made great wailing that Rustem should go before the evil Deevs. And she would have hindered him, but Rustem suffered her not. He comforted her with his voice, and bade her be of good cheer. He showed unto her how that he had not of his own choice chosen this adventure. And he bade her rest her hopes in God. And when he had done speaking she let him depart, but the heart of Rudabeh yearned after her son, and her eyes were red with weeping many days.
In the meanwhile the young hero of the world sped forth to do his duty unto the Shah. And Rakush caused the ground to vanish under his feet, and in twelve hours was a two days' journey accomplished. Then when eve was fallen, Rustem ensnared a wild ass, and made a fire and roasted it for his meal. And when he had done he released Rakush from the bonds of his saddle and prepared for himself a couch among the reeds, neither was he afraid of wild beasts or of Deevs.
But in the reeds was hidden the lair of a fierce lion, and the lion when he returned unto his haunt beheld the tall man and the horse that watched beside him. And he rejoiced at the fat meal that he held was in store. And he thought within his mind, "I will first subdue the steed, then the rider will be an easy prey." And he fell upon Rakush. But Rakush defended himself mightily. With his hoofs did he trample upon the forehead of the lion, with his sharp teeth did he tear his skin, and he trampled upon him till he died. But the noise of the struggle had wakened Rustem, and when he beheld the body of the lion, and Rakush standing beside it, he knew what had been done.
Then he opened his mouth in reproof, and said-"O thoughtless steed, who bade thee combat lions? Wherefore didst thou not wake me? for if thou hadst been overcome, who, I pray thee, could have borne my weight into Mazinderan, whither I must hie me to deliver the Shah?
When he had thus spoken he turned again to sleep, but Rakush was sorrowful and downcast in his spirit.
Now when morn was come they set forth once again upon their travels.
And all day long they passed through a desert, and the pitiless sun burned down upon their heads, and the sand was living fire, and the steed and rider were like to perish of thirst, and nowhere could Rustem find the traces of water. So he made him ready to die, and commended his soul unto God, and prayed Him to remember Kai Kaous, His servant, nor abandon him in his distress. Then he laid him down to await the end. But lo! when he thought it was come, there passed before him a ram, well nourished and fat. And Rustem said unto himself-"Surely the watering-place of this beast cannot be distant."
Then he roused him and led Rakush and followed in the footsteps of the ram, and behold, it led him unto a spring of water, cool and clear.
And Rustem drank thereof with greed, and he gave unto Rakush, and bathed him in the waters, and when they were both refreshed he sought for the traces of the ram. And they were nowhere to be found. Then Rustem knew that Ormuzd had wrought a wonder for his sake, and he fell upon the ground and lifted up his soul in thankfulness. Then when he had caught and eaten a wild ass, he laid him down to slumber.
And he spake and said unto Rakush-"I charge thee, O my steed, that thou seek no strife during my slumbers.
If an enemy cometh before thee, come unto me and neigh beside mine ear, and verily I will waken and come to thine aid."
And Rakush listened, and when he saw that Rustem slumbered, he gambolled and grazed beside him. But when some watches of the night were spent, there came forth an angry dragon whose home was in this spot, a dragon fierce and fiery, whom even the Deevs dared not encounter. And when he beheld Rakush and Rustem he was astonished that a man should slumber softly beside his lair. And he came towards them with his breath of poison. Then Rakush, when he saw it, stamped his hoofs upon the ground and beat the air with his tail, so that the noise thereof resounded wide, and Rustem was awakened with the din. And he was angry with Rakush that he had wakened him, for the dragon had vanished, and he could see no cause for fear. And he said-"It is thy fault, O unkind steed, that slumber is fled from me."
Then he turned him to sleep once again. But when the dragon saw it he came forth once more, and once more did Rakush wake Rustem, and once more did the dragon vanish ere the eyes of Rustem were opened.
And when Rakush had thus awakened the hero yet three times, Rustem was beside him with anger, and wisdom departed from its dwelling.
He piled reproaches upon the horse, and hurled bitter words upon his head, and he sware that if he acted thus again he would slay him with his arm of power, and would wander on foot unto Mazinderan. And he said-"I bade thee call upon me if dangers menaced, but thou sufferest me not to slumber when all is well."
Then Rustem drew his leopard-skin about him and laid him down again to sleep. But Rakush was pained in his spirit, and pawed the ground in his vexation. Then the dragon came forth yet again, and was about to fall upon Rakush, and the steed was sore distressed how he should act. But he took courage and came beside Rustem once more, and stamped upon the ground and neighed and woke him. And Rustem sprang up in fury, but this time it was given unto him to behold the dragon, and he knew that Rakush had done that which was right. And he drew his armour about him and unsheathed his sword, and came forth to meet the fiery beast. Then the dragon said-"What is thy name, and who art thou that dost venture against me? for verily the woman that bore thee shall weep."
And the Pehliva answered, "I am Rustem, of the seed of Zal, and in myself I am an host, and none can withstand my might."
But the dragon laughed at his words, and held them to be vain boasting.