«عَلَى عِينَكْ يَا تَاجِرْ»

The saying marks something as completely evident. It is so plainly exposed that anyone who looks can see it, and nothing about it is hidden, disguised, or left to guesswork. The speaker treats the matter as needing no further demonstration.

The address to a merchant is figurative and does not limit the saying to trade. By calling on an imagined merchant to look with his own eyes, the expression stresses direct witnessing over report or rumor. Whatever is described lies openly before every observer, so demanding evidence for it would make little sense.

Use it when pointing out that something is in full view and needs no proof, such as an obvious fact or an act done openly before onlookers. It works as a brief exclamation or closing remark, and it is recorded in variant wordings.