For this reason...

For this reason, he decided to speak his mind to al-Ma’mun and to acquaint him with the disturbing situation clouding the government and with the failure of the extravagant policy adopted by al-Fadl and his brother.

Al-Fadl Incites About Harthama Al-Fadl, possibly because of his intelligence and cunning, sensed the intriguing intentions of Harthama and that he was determined to incite the caliph against him and his brother, or maybe he came to know about that from his own watchdogs and informants whom he chose to monitor the movements of the leaders and chiefs and to inform him of their news; after all, it was only natural that al-Fadl should have an intelligence system to guarantee internal security.

The result is that in order to foil the man's attempt, al-Fadl asked al-Ma’mun to order Harthama to go to Syria and Hijaz, but Harthama was more stubborn than al-Fadl had expected. Ibn Khaldun narrates the following in his Tarikh : "Having finished with Abul-Saraya, Harthama returned, and al-Hasan ibn Sahl was in Madain and he did not go to visit him there.

He went from 'Aqr Qoob to Nahrawan heading towards Khurasan just to be faced with a barrage of letters from al-Ma’mun ordering him to go to Syria and Hijaz, but he insisted instead on meeting him, remembering how he used to provide him and his father with counsel, with the objective to acquaint him with the schemes of al-Fadl ibn Sahl who was deliberately hiding news from him, about the worry of the public because of that, and because of his extravagance, and also about his stay in Khurasan.

Al-Fadl came to know about that, and he incited al-Ma’mun about him, claiming that the man had given a post to Abul-Saraya because he was among his soldiers, and that he had deliberately gone against his instructions expressed in the letters he had sent him. To forgive him, al-Fadl went on, would be to encourage others to do likewise. Al-Ma’mun became angry and waited to see him.

When he reached Marw, he ordered the drums to be beaten so that nobody could hide the news of his arrival from al-Ma’mun. When al-Ma’mun inquired about the beating of those drums, he was told that Harthama had arrived roaring and snarling, so he ordered him to see him at his court. Al-Ma’mun said to him, `Harthama...! You have antagonized the Alawides!