Imam al-Hadi (peace be upon him): Abu Abdullah al-Ziyadi said: ... One day al-Mutawakkil said to Yahya ibn Aktham, "In my presence, ask Ibn al-Rida (Imam al-Hadi (peace be upon him)) some difficult questions." So he put questions to the Imam (peace be upon him) ... Imam al-Hadi (peace be upon him) said to Ibn al-Sikkit, "I will dictate the answers to these questions and you write them down." He said: "Write: ... As for your objection, in which you said that Ali (peace be upon him) fought the people of Siffin — both those who were advancing and those who were fleeing — and finished off their wounded, yet in the Battle of the Camel he did not pursue those who fled and did not finish off the wounded, and whoever cast away his sword and his weapon was granted safety: the reason was that the army of the Camel — their chief and commander had been killed. They had no refuge to which they could turn, so they went back to their homes with no further intention of fighting, not seeking helpers or preparing for combat. If he had left them alone, they were content. The ruling concerning them was precisely this: that [the sword be lifted from them] and they be left alone, because they were not pursuing the continuation of the war (they were not seeking to recruit supporters against the Imam (peace be upon him)). But the army of Siffin were turning back to a well-equipped force and a living leader who continually prepared weapons for them — spears, swords and armour — and [made them ready] and gave them rewards and bestowed wealth upon them, treated their sick and wounded, sent mounts for those on foot, clothed the unarmoured, and sent them back so that they became ready for battle once more. But with the people of Basra, once they cast down their weapons he had to hold his hand from them, because they had no equipped force [to which they could return]. As for the fugitives of Siffin, he had to pursue them and finish off their wounded. These two armies were not equal. Were it not for Ali's (peace be upon him) ruling concerning the people of Siffin and the Camel, no one would have been able to distinguish what the ruling is for rebels from among the Muslims and what must be done with them. Whoever refuses is referred to the sharp sword. As for the man who confessed to sodomy — he gave up his own life; no witnesses testified against his act, nor did the ruling authority seize him in the act. A leader who governs the people on behalf of Allah, when he is able by Allah's command to punish someone, is also able to pardon him. Have you not heard this verse in which Allah says concerning Sulayman (peace be upon him): هذا عَطاؤُنا فَامْنُنْ أَوْ أَمْسِکْ بِغَیْرِ حِسابٍ [This is Our free gift, therefore give freely or withhold, without reckoning]? In this verse Allah first mentions bestowal and grace, and only afterwards speaks of withholding and refusal." When Yahya ibn Aktham read the letter, he said to al-Mutawakkil, "It is not right for you to ask this man anything further after these questions of mine, for no question you put to him will be harder than these, and the more his knowledge is spread abroad, the more it strengthens the Rafidis."