Discussion of the hadeeth, “The Qadariyyah are the Magians of this ummah”
Question

                I came across this hadith on the internet The Prophet (صلّى الله عليه وآله وسلّم) said:"To every Ummah there is a magian and the magian of this ummah are those who reject the Qadr [pre-destination]. If anyone amongst them dies, do not attend their funeral, and if anyone amongst them becomes sick don’t visit them and they are Shia-tul Dajjal and it is the right of God to join them with the Dajjal.” (Sunan Abu Dawoud #4072)

And then I went to Sunan Abu Dawud kitab libas and I could not find this hadith (4072) so I was wondering why? Is it authentic or daaef?.
Praise be to Allah.
      This hadeeth was narrated by Abu Dawood in his Sunan 
      (4961), Kitaab al-Sunnah, Baab fi’l-Qadar:

    It was narrated from Ibn ‘Umar (may Allah be pleased with 
    him) from the Prophet (blessings and peace of Allah be upon him) that he 
    said: “The Qadaris (those 
    who deny al-qadar) are the Magians of this ummah. If they get sick, do not 
    visit them and if they die, do not attend (their funerals). 

    It was also narrated by al-Haakim 
    (286), al-Bayhaqi (21391), al-Tabaraani in al-Awsat (2494), 
    al-Baghawi in Sharh al-Sunnah (1/78), Ibn ‘Asaakir in Tareekh 
    Dimashq (19/62), Ibn Abi ‘Aasim in al-Sunnah (268) and others, from the 
    hadeeth of Ibn ‘Umar (may Allah be pleased with him). It was classed as 
    saheeh by Ibn al-Qattaan in Bayaan al-Wahm wa’l-Eehaam (5/446) and as 
    hasan by al-Albaani in Saheeh Abi Dawood and elsewhere. Al-Safaareeni 
    said in Lawaa’ih al-Anwaar: It is no less than hasan. 

    The beginning of it was narrated 
    via numerous other isnaads. Ibn al-Qayyim (may Allah have mercy on him) 
    said: 

    Something similar was narrated 
    from the Prophet (blessings and peace of Allah be upon him) from Ibn ‘Umar, 
    Hudhayfah, Ibn ‘Abbaas, Jaabir ibn ‘Abd-Allah, Abu Hurayrah, ‘Abd-Allah ibn 
    ‘Amr ibn al-‘Aas and Raafi‘ ibn Khadeej. 

    End quote from Tahdheeb Sunan 
    Abi Dawood, 2/347 

    Al-Bayhaqi (may Allah have mercy 
    on him) said: 

    They are called Qadariyyah because 
    they affirmed al-qadar (power of decree) for themselves but they denied it 
    for Allah, may He be glorified and exalted. They denied that He created 
    their deeds and affirmed that for themselves. By attributing some acts of 
    creation to Him but not others they became like the Magians in their belief 
    in the two principles of light and darkness and that good is the action of 
    light and evil is the action of darkness.

    End quote from al-I‘tiqaad, 
    p. 245 

    Al-Khattaabi (may Allah have mercy 
    on him) said: The Prophet (blessings and peace of Allah be upon him) likened 
    them to Magians because their views were similar to the views of the Magians 
    who believe in two principles, light and darkness, and they claimed that 
    good is the action of the light and evil is the action of darkness, so they 
    became believers in dualism. Similarly, the Qadaris attribute good to Allah, 
    may He be exalted, and they attribute evil to someone other than Him, but 
    Allah, may He be glorified and exalted is the Creator of both good and evil; 
    neither of them could happen except by His will, so they are attributed to 
    Him in the sense that He created them and brought them into being, and they 
    are attributed to the ones who do them of His slaves in the sense that they 
    commit these actions. End quote. 

    Sharh Muslim, 
    1/154 

    And Allah knows best.