Yes, it is the responsibility of the man’s family to arrange for a walimah!
Usually, the number of guests for the brides family is limited and hence they offer to participate in the expenses so that their quota of guests can increase.

Shaikh, Someone said that it is obligatory for the men’s family to pay for the wedding expenses and that the dowry must cover all the other wedding expenses such as jewlery, clothing, etc for the wedding. Is it a cultural practice (not religious practice) for which family pays for the wedding and also the women has the right to use the dowry for whatever she wishes?