He slaughtered one sheep as ‘aqeeqah for a boy a while ago; can he slaughter another sheep now?
Question

                I was blessed with the birth of a boy and I slaughtered only one sheep six years ago. Can I slaughter another sheep to complete the ‘aqeeqah, i.e., two sheep for a boy, or must I slaughter two sheep now as a new ‘aqeeqah?.
Praise be to Allah.
    ‘Aqeeqah is a confirmed Sunnah, but there is no sin on the 
    one who does not do it. That is because of the hadeeth narrated by Abu 
    Dawood (2842) which says that the Messenger of Allaah  (peace and 
    blessings of Allaah be upon him) said: “Whoever has a child born to him and 
    wants to offer the sacrifice, let him do so, for a boy two similar sheep and 
    for a girl one sheep.” The hadeeth was classed as hasan by al-Albaani in 
    Saheeh Abi Dawood. 

    If you want to fulfil this Sunnah, then slaughter one sheep 
    now, to complete what you did six years ago. 

    See also question no. 38197 and 
    20018. 
And Allaah knows 
    best.