He has polio and he does not pray in congregation sometimes
Question

                I am a person who has polio. Praise be to Allaah, I usually pray in the mosque but sometimes I pray at home because I sleep late. I also often pray Zuhr at home. Is there any sin on me?.
Praise be to Allah.Praying in 
    congregation is obligatory for men who are able for it, whether they are in 
    their home town or travelling, according to the more correct of the two 
    scholarly opinions, because of a great deal of evidence, which has been 
    quoted in the answers to questions no. 
    8918 and 
    120. 
If you are 
    able to go to the mosque, then praying in congregation is obligatory for 
    you. You said that you usually pray in the mosque, praise be to Allaah. This 
    by the grace of Allaah and His blessing to you. So strive to show gratitude 
    for it, for gratitude increases the blessing, as Allaah says (interpretation 
    of the meaning): 
“If you 
    give thanks (by accepting Faith and worshipping none but Allaah), I will 
    give you more (of My Blessings)”

    [Ibraaheem 14:7]. 
Secondly: 
Sleeping is 
    a (valid) excuse for not praying in congregation, so long as it is not due 
    to carelessness, such as staying up at night for no need and not making use 
    of the means to help one wake up. Al-Tirmidhi (177), al-Nasaa’i (615), Abu 
    Dawood (437) and Ibn Maajah (698) narrated that Abu Qataadah (may Allaah be 
    pleased with him) said: They told the Prophet  (peace and blessings of 
    Allaah be upon him) about their sleeping and missing the prayer, and he 
    said: “There is no negligence when one is sleeping, rather there is 
    negligence when one is awake. If any one of you forgets to pray, or sleeps 
    and misses a prayer, then let him pray when he remembers.” Classed as saheeh 
    by al-Albaani in Saheeh al-Tirmidhi. This hadeeth is also narrated in
    al-Saheehayn with similar wording. 

    Al-Mubaarakfoori said in Sharh al-Tirmidhi: “There is no negligence 
    when one is sleeping” means that negligence cannot be ascribed to the one 
    who sleeps and delays a prayer as a result. 
“rather 
    there is negligence when one is awake” means that negligence and 
    shortcomings are committed by the one who is awake and fails to pray or 
    delays the prayer with no excuse. End quote. 
The Standing 
    Committee for Issuing Fatwas was asked: A man prayed Fajr after the sun had 
    risen, and that became his habit every day for two years, because he claimed 
    that sleep overtook him, as he stayed up at night in cafes and watching 
    entertainment until after midnight. Is his prayer valid? 
They 
    replied: It is haraam to delay prayers until after the time for them is 
    over. The adult Muslim must offer prayers on time – Fajr prayer and others – 
    by asking someone to wake him up for them or by using an alarm clock to wake 
    him up. It is haraam for him to stay up late watching entertainment etc as 
    Allaah has forbidden him to stay up late doing things that will prevent him 
    from offering Fajr prayer on time or in congregation. The Prophet  
    (peace and blessings of Allaah be upon him) forbade staying up after ‘Isha’ 
    for no legitimate shar’i reason. Every deed that will cause a delay in 
    praying until the time for the prayer is over is haraam, unless an exception 
    is made in sharee’ah. End quote from Fataawa al-Lajnah al-Daa’imah 
    (6/15). 
Thirdly: 
If you stay 
    away from offering Zuhr prayer in congregation for a valid reason, such as 
    not being able to go to the mosque, there is no sin on you. But if there is 
    no excuse then you have to repent to Allaah and offer the prayer in 
    congregation in the future. 
We ask 
    Allaah to help you to do that which He loves and which pleases Him. 
And Allaah 
    knows best.