Ruling on Designating a Day in Rajab for Slaughter for Allah the Exalted

Question:
He says: My mother bequeathed to me that I slaughter a sacrificial animal on the fifteenth of Rajab every year. However, this year I heard from some of my brothers, the students of knowledge, that this is forbidden or disliked. So I refrained and did not carry out my mother's bequest. What is your opinion, Your Eminence, regarding carrying out this bequest or not?

Answer:
Designating it specifically for Rajab has no basis. However, if you carry it out sometimes like this, and sometimes in Sha'ban, and sometimes in Ramadan, and sometimes in other months, and give it in charity on her behalf, there is no harm. As for designating Rajab specifically, it has no basis; this is from the practices of the pre-Islamic age of ignorance. But if you carry it out at other times without restricting yourself to anything, and give it in charity, there is no harm. And the best time for it is Ramadan, because Ramadan is the best of the months. So if you carry it out in Ramadan, that is a righteous deed. And if you carry it out at another time: at a time when people need meat, or at a time when you find poor people, and distribute it among them in a suitable place where there are poor people; all of this is good.