How can Imam Ibn al-Qayyim's authentication of a hadith mentioning the coming of the "Abdāl" be reconciled with his weakening of other hadiths about the "Abdāl," especially given that Shaykh al-Islam Ibn Taymiyyah held that everything narrated concerning the Abdāl is not authentically attributed to the Prophet, peace and blessings be upon him?

Ibn al-Qayyim's words in "Al-Manar Al-Munif" do not contain a contradiction regarding the authentication and weakening of the Awtad (pegs) hadiths. He generally weakened hadiths about the Abdal (substitutes), Aqtab (poles), and Awtad. His authentication of Umm Salama’s hadith does not contradict this, as he did not mention the description or number of the Abdal in it. Rather, he mentioned a general phrase, "the Abdal of Syria," and it is probable that what was meant by it were the people of knowledge, because they are the inheritors of the Prophets. Furthermore, Umm Salama's hadith is weak because its chain of narration revolves around an unknown narrator.