Q : What are the characteristics required in those reconciling Muslims?
A : They should be characterized with forbearance, fear of Allah, righteous deeds, and fair judgment even against oneself to make peace among people according to the knowledge, insight, fair judgment, and modesty Allah (may He be Exalted) granted them. When a person has these traits, he may bring about peace among disputants and foes whom Satan allured them to disagreement and dispute.
A peace-maker should also be generous, gentle, modest, polite, and a good speaker.
Such a person should bring about peace among people with fine words and an honorable style, kindness, and generosity. When necessity calls for a banquet or some aid, he will be willing to do so in order to make peace. He may also pay money to bring about peace; he may borrow from his brothers to achieve reconciliation among the disputing parties, tribes, families, brothers, and so on. Thus, one might need to spend money even through borrowing a certain sum. It is permissible to give such a person out of the money of Zakah, if he undertakes to make peace. A peace-maker is worthy of aid and support even by the money of Zakah. There is a Sahih (authentic) Hadith wherein the Messenger (peace be upon him) said: Seeking aid is not permissible but for one of the three (classes) of persons: one who willingly paid a fine, meaning, blood money, damages, compensation and so on, and to bring about peace among disputing parties; thus, seeking aid is permissible till he pays that off, after which he must stop it. Narrated by Muslim in his Sahih.