From No Good Men Among the Living: America, the Taliban, and the War through Afghan Eyes, by Anand Gopal (Henry Holt, 2014), Kindle pp. 104-105:
Within a month of its military collapse, the Taliban movement had ceased to exist. When religious clerics in Pakistan launched a fund-raising campaign to get the Taliban back on their feet and waging “jihad” against the Americans, it was roundly rejected by the Talib leadership. “We want to tell people the Taliban system is no more,” Agha Jan Mutassim, finance minister of the fallen regime and Mullah Omar’s confidant, told reporters. “They should not give any donations in the name of the Taliban.” He added: “If a stable Islamic government is established in Afghanistan, we don’t intend to launch any action against it.”
Khalid Pashtoon, spokesman for the new Kandahar government, declared: “Ministers of the Taliban and senior Taliban are coming one by one and surrendering and joining with us.” The list included the Taliban ministers of defense, justice, interior, vice and virtue, information, health, commerce, industry, and finance—in effect, the entire Taliban cabinet; key military commanders and important governors; diplomats; and top officials who had worked with Mullah Omar. The avalanche of surrenders knew no bounds of ideology: leaders of the notorious whip-wielding religious police were among the earliest to defect. A group of former Taliban officials even announced that they were forming a political party to participate in future democratic elections. “We are giving advice to Hamid Karzai,” said their leader. “We support him.”
By surrendering, the Taliban were following the pattern that had marked Afghan politics for much of the previous two decades. After the Soviet withdrawal, many Afghan Communists had rebranded themselves as Islamists and joined the mujahedeen. During the civil war, factions shifted loyalties based on nothing more than bald pragmatism. Upon the Taliban’s entry onto the scene, warlords across the Pashtun belt had either retired, fled, or joined them. Now it was the Taliban’s turn, and as one member of the movement after another submitted to the authority of the Karzai administration, there emerged the possibility of a truly inclusive political order.