Did the Prophet (blessings and peace of Allah be upon him) have a Jewish servant boy?
Question

                Did the Messenger (blessings and peace of Allah be upon him) have a Jewish servant?
Praise be to Allah.
    Yes, it is proven in Saheeh al-Bukhaari and elsewhere 
    that a Jewish boy used to serve the Prophet (blessings and peace of Allah be 
    upon him). On one occasion he fell sick and the Prophet (blessings and peace 
    of Allah be upon him) visited him and invited him to Islam. This is the 
    story as it was narrated by Anas ibn Maalik (may Allah be pleased with 
    him): 

    A Jewish boy used to serve the Prophet (blessings and peace 
    of Allah be upon him) and he fell sick. The Prophet (blessings and peace of 
    Allah be upon him) came to visit him. He sat by his head and said: “Become 
    Muslim.” The boy looked at his father, who was also by his head, and his 
    father said to him: Obey Abu’l-Qaasim (blessings and peace of Allah be upon 
    him). So he became Muslim, and the Prophet (blessings and peace of Allah be 
    upon him) left, saying, “Praise be to Allah Who have saved him from the 
    Fire.”

    Narrated by al-Bukhaari (1356). 

    But the sources do not tell us the name of this boy or 
    anything about his service to the Messenger of Allah (blessings and peace of 
    Allah be upon him), and they do not mention anything about the reason why 
    the Prophet (blessings and peace of Allah be upon him) accepted his 
    service. 

    Al-Haafiz Ibn Hajar said in Fath al-Baari (3/221): 

    “A Jewish boy used to serve…” – I have not come across 
    anything  narrated via complete isnaads about his name, except that Ibn 
    Bashkuwaal stated that the author of al-‘Atabiyyah narrated from 
    Ziyaad Shaytoon that this boy’s name was ‘Abd al-Quddoos. He said: This is 
    an odd report; I did not find it with anyone else. End quote. 

    All that there is, is the fact that some of the commentators 
    suggested that this boy participated in bewitching the Prophet (blessings 
    and peace of Allah be upon him), as he was the one who took some of the hair 
    of the Prophet (blessings and peace of Allah be upon him) and gave it to 
    Labeed ibn al-A‘sam, the Jewish man who was a practitioner of witchcraft. 
    However this report has not been proven to be sound. 

    Al-Qurtubi said in al-Jaami‘ li Ahkaam al-Qur’an 
    (20/232): 

    Al-Qushayri stated in his Tafseer that it was narrated 
    in the Saheehs that a Jewish boy used to serve the Prophet (blessings 
    and peace of Allah be upon him), and the Jews contacted him and kept on at 
    him until he took some hairs that had fallen from the head of the Prophet 
    (blessings and peace of Allah be upon him) when he combed his hair, and he 
    took some of the teeth of his comb, and gave them to the Jews, who used them 
    to bewitch him, and the one who did that was the Jew Labeed ibn al-A‘sam. 
    End quote. 

    See a similar report in Zaad al-Maseer by Ibn al-Jawzi 
    (9/270) 

    From the story of the Jewish boy serving the Prophet 
    (blessings and peace of Allah be upon him) we see an example of the 
    tolerance, easy-going nature and gentleness that the Prophet (blessings and 
    peace of Allah be upon him) carried in his compassionate heart, and that he 
    was merciful and compassionate towards all people; he hoped for good for 
    them and warned them against evil. So he did not hesitate to visit this 
    Jewish boy at home when he was sick, and he did not miss any opportunity to 
    call them to true guidance. But they responded with plots and treachery, and 
    they tried to kill him and put poison in his food. 

    For more information on the way of the Prophet (blessings and 
    peace of Allah be upon him) in his interactions with the Jews, please see 
    question no. 84308

    And Allah knows best.