Ruling on a waqf that includes something that is wrong
Question

                A man asked me a question and told me that he has a relative who gave a piece of land as a waqf so that with the income generated by that waqf, meat is to be bought and meals offered in Rajab every year, and food is to be distributed to the poor during that month. He is the one who is taking care of this waqf, but he did not dispose of its income last year. He is asking about the ruling on this waqf, and if it is said that it is not permissible, what should be done with the income of the waqf each year?
Praise be to Allah.
    We say to the one who is looking after the waqf: buy meat 
    with the income generated by the waqf and distribute it to the poor. Do not 
    do this only in the month of Rajab; rather do it in any month, because if a 
    waqf includes something that is wrong, it should be put into practice 
    without that wrong thing. What is wrong here in this case is singling out 
    the month of Rajab for slaughtering the meat. This is to be avoided, and the 
    meat should be slaughtered in any month and distributed to the poor as 
    stated in the waqf. And Allaah knows best.