Is there a concession allowing one who is newly married not to pray in congregation?
Question

                Is it true that the Sunnah allows one who is newly married to pray at home during the first week of marriage and not take part in congregational prayers? What is the evidence for that?.
Praise be to Allah.
    There is a great deal of evidence which shows that it is 
    obligatory for men to pray in congregation as you will see discussed in 
    detail in the answer to question no. 
    120. We do not know of any evidence 
    that suggests that a newly married man is allowed not to pray in 
    congregation, apart from a few fuqaha’ who stated that the one who is 
    waiting for his bride to be brought to him is excused from praying in 
    congregation. 

    Shaykh Ibn ‘Uthaymeen (may Allaah have mercy on him) was 
    asked about his opinion on this and he said: We think that the views of the 
    scholars may include those that are wrong and those that are right. What is 
    essential is to refer to the Qur’aan and Sunnah. 

    Secondly: 

    The scholars who said this were speaking about something that 
    they used to do, whereby it was the man who received the bride, and the 
    bride did not receive the man. The man would be in his house and his wife 
    would be brought to him, and this was an excuse for not praying in 
    congregation, because if he went and prayed in the mosque, he would not be 
    focusing on his prayer because his mind would be distracted, and the Prophet 
     (peace and blessings of Allaah be upon him) said: “There is no prayer 
    when food is ready.” Ibn ‘Umar (may Allaah be pleased with him) would hear 
    the imam reciting whilst he was eating dinner and he would not get up to 
    pray until he had finished eating. If a man is excused for not attending 
    prayer in congregation in this case, then the one who is waiting for his 
    bride to be brought to him is more distracted, so the excuse is obvious. But 
    the custom of people nowadays in our country is different from that; the 
    groom comes to the bride where she is, so it is up to him and he has no 
    excuse for not praying in congregation. End quote. 

    From As’ilah al-Liqa’ al-Shahri (29). 

    With regard to the wedding being an excuse for not praying in 
    congregation at all, although some of the fuqaha’ have mentioned it, there 
    is no saheeh evidence for that. Shaykh Ibn ‘Uthaymeen (may Allaah have mercy 
    on him) was asked about someone who did not pray Fajr on the morning of his 
    wedding and his answer was: The groom has to pray Fajr in congregation and 
    not fail to pray in congregation with no legitimate excuse. End quote. 

    From As’ilah al-Liqa’ al-Shahri (29). 

    Secondly: 

    What the questioner is asking about – a newly married man not 
    praying in congregation for a week – is something that some people think is 
    Sunnah. Perhaps they understood this from the words of Anas (may Allaah be 
    pleased with him): It is Sunnah to stay with a virgin for seven (days). 
    Agreed upon – this version was narrated by Muslim (1461). 

    But the meaning is not as these people understand it, that he 
    should stay with her for seven days and not go out of the house or pray in 
    congregation in the mosque.  

    Rather what it means is that if he marries a virgin and he 
    has another wife, he should allocate seven nights to the virgin, just for 
    her, then after that he should give each wife a night in turn. 

    This is narrated from Anas (may Allaah be pleased with him) 
    in the hadeeth quoted above, which was narrated by al-Bukhaari (5214) and 
    Muslim (1461): It is Sunnah, if a man marries a virgin when he already has a 
    wife who was previously-married, to stay with her for seven days, then 
    divide his time (between his wives). And if he marries a previously-married 
    woman when he already has a wife who was a virgin, he should stay with her 
    for three days and then divide his time.  

    From this version it is clear that what Anas meant was that 
    he should stay with a virgin for seven days, i.e. give her seven days just 
    for her, then start to divide his time between her and his other wives. 

    And Allaah knows best.