Which is more important, repeating the word of the adhaan or hastening to break the fast?
Question

                Its said that we should listen to azan.but what about a person whois breaking his fast on hearing magrib azan?is he exempted as he is having food to break fast?similarly abot having sahri during fajr azan?.
Praise be to Allah.
    The scholars 
    differed concerning the ruling on repeating after the muezzin and repeating 
    the words of the adhaan. The correct view – which is the view of the 
    majority of scholars – is that repeating it is mustahabb, not obligatory. 
    This is the view of the Maalikis, Shaafa’is and Hanbalis. 

    Al-Nawawi (may 
    Allaah have mercy on him) said in al-Majmoo’ (3/127): 

    Our view is 
    that repeating (the words of the adhaan) is Sunnah, not obligatory. This is 
    the view of the majority of scholars. Al-Tahhaawi narrated that some of the 
    salaf held a different view and said that it is obligatory. End quote. 

    In 
    al-Mughni (1/256) it is narrated that Imam Ahmad said: If he does not 
    repeat his words there is nothing wrong with that. End quote. 

    This is 
    indicated by the words of the Prophet  (peace and blessings of Allaah be 
    upon him) to Maalik ibn al-Huwayrith and those who were with him: “When the 
    time for prayer comes, let one of you give the adhaan and let the oldest of 
    you lead you in prayer.” 

    This indicates 
    that repeating the words of the adhaan is not obligatory. This conclusion is 
    based on the fact that the Prophet  (peace and blessings of Allaah be 
    upon him) was teaching them, and in this case there was a need to explain 
    everything they needed to know. This delegation of people may not have had 
    any knowledge of what the Prophet  (peace and blessings of Allaah be 
    upon him) said about repeating the words of the adhaan, and the fact that 
    the Prophet  (peace and blessings of Allaah be upon him) did not mention 
    it, even though there may have been a need to explain it to them, and this 
    delegation stayed with him for twenty days then left, indicates that 
    repeating the words of the adhaan is not obligatory. This is the most 
    correct view. End quote from al-Sharh al-Mumti’ (2/75). 

    Maalik 
    narrated in al-Muwatta’ (1/103) from Ibn Shihaab that Tha’labah ibn 
    Abi Maalik al-Qurazi told him: At the time of ‘Umar ibn al-Khattaab they 
    would pray on Friday until ‘Umar came out. When ‘Umar came out and sat on 
    the minbar and the muezzin gave the adhaan, Tha’labah said: We would sit and 
    talk, then when the muezzins fell silent and ‘Umar stood up to deliver the 
    khutbah, we would listen attentively and none of us would speak. 

    Ibn Shihaab 
    said: When the imam comes out, prayer should stop, and when he speaks, 
    speaking should stop. 

    Shaykh 
    al-Albaani (may Allaah have mercy on him) said in Tamaam al-Minnah 
    (340): 

    This report 
    indicates that it is not obligatory to repeat the words of the muezzin, 
    because what was done at the time of ‘Umar was that people spoke during the 
    adhaan, and ‘Umar did not say anything about that. I have often been asked 
    about the evidence that repeating the words of the adhaan is not obligatory, 
    and I have replied in this manner. End quote.  

    Based on the 
    above, there is no sin on the one who does not repeat the words of the 
    muezzin, whether that is because he is busy with eating or anything else. 
    But by doing that he is missing out on a great reward with Allaah. 

    Muslim (385) 
    narrated that ‘Umar ibn al-Khattaab (may Allaah be pleased with him) said: 
    The Messenger of Allaah  (peace and blessings of Allaah be upon him) 
    said: “If the muezzin says, ‘Allaahu akbar, Allaahu akbar (Allaah is 
    most great, Allaah is most great),’ and one of you says, ‘Allaahu akbar, 
    Allaahu akbar (Allaah is most great, Allaah is most great)’; then he 
    says, ‘Ashhadu an laa ilaaha ill-Allaah (I bear witness that there is 
    no god except Allaah),’ and you say, ‘Ashhadu an laa ilaaha ill-Allaah 
    (I bear witness that there is no god except Allaah)’; then he says, ‘Ashhadu 
    anna Muhammadan rasool-Allaah (I bear witness that Muhammad is the 
    Messenger of Allaah),’ and you say, ‘Ashhadu anna Muhammadan 
    rasool-Allaah (I bear witness that Muhammad is the Messenger of 
    Allaah)’; then he says, ‘Hayya ‘ala’l-salaah (Come to prayer),’ and 
    you say, ‘La hawla wa laa quwwata illa Billaah (There is no power and 
    no strength except with Allaah)’; then he says, ‘Hayya ‘ala’l-falaah 
    (Come to prosperity),’ and you say, ‘Laa hawla wa laa quwwata illa 
    Billaah (There is no power and no strength except with Allaah)’; then he 
    says, ‘Allaahu akbar, Allaahu akbar (Allaah is most great, Allaah is 
    most great),’ and you say, ‘Allaahu akbar, Allaahu akbar (Allaah is 
    most great, Allaah is most great)’; then he says, ‘Laa ilaaha ill-Allaah 
    (There is no god but Allaah),’ and one of you says, ‘Laa ilaaha 
    ill-Allaah (There is no god but Allaah),’ from the heart, he will enter 
    Paradise.” 

    There is no 
    conflict between hastening to break the fast and repeating the words of the 
    muezzin. The fasting person can hasten to break his fast as soon as the sun 
    has set, and at the same time he can repeat the words of the muezzin. Then 
    he will have attained both virtues, the virtue of hastening to break the 
    fast and the virtue of repeating the words of the muezzin. 

    People from 
    ancient times until now have always spoken whilst eating; they do not think 
    that eating keeps them from speaking. But it should be noted that hastening 
    to break the fast may be done by eating anything, even if it is something 
    small like a date or drinking water. It does not mean that he should eat 
    until he is full. 

    The same 
    applies if the adhaan for Fajr is given when one is eating sahoor; he can 
    combine the two without difficulty. 

    But if the 
    muezzin gives the adhaan for Fajr after the time for it begins, then one 
    must stop eating and drinking when the adhaan is heard. 

    See also the 
    answer to question no. 66202.  

    And Allaah knows best.