What is the ruling on paying less than the designated fare for public transportation, knowing that there is a unified fare and a condition to pay the full fare regardless of the distance?

It is not permissible to pay less than the stipulated fare for public transportation, as this violates the condition of its use and entails consuming public funds unjustly. This is based on the Prophet's (peace be upon him) sayings: "Muslims are bound by their conditions in what is lawful," and "Indeed, there are men who delve into Allah's property without right, and for them is the Fire on the Day of Resurrection."