らくはくのたねくはらくのたね
Composed of
comfort; ease; easy; simple; (economically) comfortable; raku pottery
pain; anguish; suffering; duhkha (suffering)
seed (e.g. of a plant); pip; material (e.g. for an article); matter (e.g. of a story); ingredient; leaven (bread); cause
one cannot have pleasure without pain; no pain, no gain