梅は食うとも核食うな、中に天神寝てござる

うめはくうともさねくうな、なかにてんじんねてござるumehakuutomosanekuuna、nakanitenjinnetegozaru

expression · Yodan verb with 'ru' ending (archaic)

1. don't eat plum pits (because they are poisonous)
2. if you eat a plum, don't eat the kernel; inside it heavenly gods sleep

Study it in Yanamino