זָרַע אֶל קוֹצִים

ביטוי (אנגלית)

To labour in vain/ to plough the sands/ "to sow among thorns"

הגדרה (אנגלית)

In a question of advice: He has taken trouble for nothing. His labor will be reduced to impurity.

("For thus says the Lord to Judah and Jerusalem, Break up your fallow ground, and sow not among thorns" - Jeremiah 4:3)