Question: On the 10th of Muharram, some people prepare a lot of food for their families and Khutabaa’ (preachers) constantly clarify the religious and worldly virtues of this day. What is the ruling on this? Some people also say that from experience preparing a lot of food on this day leads to blessing in their money.
Answer: What is valid is to fast during the 10th of Muharram, together with the 9th or 11th. If a Khateeb (preacher) or a tutor encourages people to do this and clarifies the virtue of it (the day), this is definitely good… read more here.