Tsumo - Shumo

Meso asangana
hwava ukama

Eyes which have met have (established) a relationship.

(Mombe) Dzafura churu chimwe
dzave zivani.

Those (cattle) that have grazed the same ant-hill know each other.

-- Shona Proverb
From Tsumo - Shumo by Mordikai A. Hamutyinei and Albert B. Plangger

Experience once shared unites people ever after.