If one misses some of the takbeers of the funeral prayer
Question

                If a person misses the takbeers of the funeral prayer, or one of them, should he make it up? How should he join the prayer with the imam?.
Praise be to Allah.
    He should join the prayer with the imam wherever he catches 
    up with it, because the Prophet  (peace and blessings of Allaah be upon 
    him) said: “Whatever you catch up with pray, and whatever you miss, complete 
    it.” When the imam says the salaam, he should complete whatever he missed if 
    the bier is still there and has not been taken away. If he is afraid that it 
    will be taken away (before he finishes), then our fuqaha’ – may Allaah have 
    mercy on them – say that he has the choice of completing the prayer or of 
    following the imam, and saying the salaam with the imam. And Allaah knows 
    best.