Now one of them fell sick of a jaundice and there came a whiteness over his eyes；[553] whereupon the King gathered together all the farriers in the city to treat him；but they all failed of his cure.Presently the Wazir came into the King；and finding him troubled because of the horse，thought to do away his concern and said to him，'O King，give me the stallion and I will cure him，'The King consented and caused carry the horse to the stable wherein Nur al-Din lay chained；but，when he missed his brother，he cried out with an exceeding great cry and neighed，so that he affrighted all the folk.The Wazir，seeing that he did thus but because he was parted from his brother，went to tell the King，who said，'If this，which is but a beast，cannot brook to be parted from his brother，how should it be with those that have reason？'And he bade his grooms take the other horse and put him with his brother in the Wazir's stables，saying，'Tell the Minister that the two stallions be a gift from me to him，for the sake of my daughter Miriam.'Nur al-Din was lying in the stable；chained and shackled，when they brought in the two stallions and he saw that one of them had a film over his eyes.Now he had some knowledge of horses and of the doctoring of their diseases；so he said to himself，'This by Allah is my opportunity！ I will go to the Wazir and lie to him，saying，'I will heal thee this horse'：
then will I do with him somewhat that shall destroy his eyes，and he will slay me and I shall be at rest from this woe-full life.'