Enjoyable and pleasant
Those who are فَاكِهِينَ (Faakiheena) are enjoying themselves and having a joyful and pleasing experience.
A pregnant she-camel is described in Arabic as مُفْكِهَة (Mufkihah) when its milk begins to flow before delivery which is a sign of imminent birth. It is used with the meaning of something that gives or brings about joy or pleasure.