Proverb reminding people to treat others well upon departing, as human beings inevitably meet again in the future.
mountains never meet, but people do / paths will cross again
tutaonana tena mtaani
"Usimfanyie mwenzako ubaya unapoondoka maana mlima haukutani na mlima bali binadamu hukutana."
Translation: Do not mistreat your companion when leaving because mountains never meet, but humans cross paths again.