(Exodus 23:4) "If you encounter (the ox of your foe, or his ass, straying, return shall you return it to him."): I might think that this is to be taken literally (as indicating bodily contact); it is, therefore, written (Ibid. 5) "If you see." — But this would imply even at a distance of a mil. It is, therefore, written "If you encounter." How are these two verses to be reconciled? The sages estimated it as one seventh and a half of a mil, i.e., a ris.
Commands If You Encounter the Ox of Your Foe
Mekhilta Tractate Kaspa 2:22