If he ate the entire ‘aqeeqah and did not give any of it in charity
Question

                My question is about the ‘aqeeqah. I have three sons and when the first and second sons were born, I did not know at that time that I had to slaughter two sheep for a male. When my first son was born I could not afford to slaughter even one sheep. My father is the one who did the ‘aqeeqah for my son. Do I have to slaughter one or two sheep now for my first son? 

With regard to the second child, I slaughtered one sheep for him, but I did not do a waleemah (feast) for my family and friends at that time, rather we ate the meat. Four months after that, I did a waleemah for my family and friends offering one lamb only. My question is: do I have to slaughter one or two sheep for my second son now? 

As for the third son, we slaughtered two sheep but we ate almost half of one of them. Is that permissible or not? I hope that you can answer my questions because I want to offer the ‘aqeeqah for my children in the correct manner that is described in the Sunnah of the Prophet (peace and blessings of Allaah be upon him). May Allaah reward you with good.
Praise be to Allah.
    Firstly: 

    ‘Aqeeqah is a confirmed Sunnah, but there is no sin on the 
    one who does not do it. Abu Dawood (2842) narrated from ‘Amr ibn Shu’ayb 
    that his father narrated from his grandfather: The Messenger of Allaah  
    (peace and blessings of Allaah be upon him) said: “Whoever has a child born 
    to him and wants to offer a sacrifice for him, let him offer a sacrifice, 
    two sheep of similar type for a boy and one sheep for a girl.” The hadeeth 
    was classed as hasan by al-Albaani in Saheeh Abi Dawood. 

    Secondly: 

    If a person did not offer ‘aqeeqah for his children, because 
    he was not able to, or because he did not know about ‘aqeeqah, it is 
    mustahabb for him to do it after that, even if it is a long time after. 

    It says in Fataawa al-Lajnah al-Daa’imah (11/441):  

    Question: 

    A man had a number of sons and he did not do ‘aqeeqah for 
    them, because he was poor. A few years later, Allaah made him independent of 
    means by His Bounty. Does he have to do ‘aqeeqah?  

    They replied:  

    If the situation is as described, then it is prescribed for 
    him to do ‘aqeeqah for them, two sheep for each boy. End quote. 

    Thirdly: 

    The father may do the ‘aqeeqah for his grandson, as the 
    Prophet  (peace and blessings of Allaah be upon him) did for his 
    grandsons al-Hasan and al-Husayn, as was narrated by Abu Dawood (2841) and 
    al-Nasaa’i (4219), and classed as saheeh by Shaykh al-Albaani in Saheeh 
    Abi Dawood (2466). 

    Based on that, if you want to follow the Sunnah properly, 
    then offer one sheep for the first son, to complete what his grandfather 
    did, if the grandfather offered only one sheep, and there is nothing wrong 
    with that. But if you leave it as one sheep, that was sacrificed by the 
    grandfather, that is fine. 

    Fourthly: 

    Some scholars are of the view that ‘aqeeqah comes under the 
    same rulings as udhiyah (sacrifice) with regard to how it is to be disposed 
    of. So it is mustahabb to divide it into three parts; one third for 
    yourself, one third for your friends, and one third for the poor. 

    Some of them are of the view that the ‘aqeeqah is not like 
    the udhiyah, so he may do with it whatever he wants. Please see question no. 
    8423. 

    Whatever the case, if you did not give anything of the 
    ‘aqeeqah to anyone else, it is still valid. As for udhiyah, the one who eats 
    it all and does not give any of it in charity should replace it with the 
    smallest amount that can be called meat, such as an uqiyah etc., which he 
    should buy and then give it in charity. See Kashshaaf al-Qinaa’ 
    (3/23). 

    Based on that, the ‘aqeeqah for the second son has been done 
    in full, as has that for the third son. Praise be to Allaah. 

    We ask Allaah to bless you and your children, and to make 
    them a help for you in obeying Allaah, and a treasure for Islam and the 
    Muslims. 

    And Allaah knows best.