you can lead a horse to the water, but you cannot make it drink
Definition:  you can demonstrate ways of doing things to people, but you cannot force them to act the way you have demonstrated
Usage:  I have shown you guys how to solve such problems to get the right answer, but you have insisted on doing things your own way; I guess the saying you can lead a horse to the water, but you cannot make it drink is indeed correct

SEPEDI
Translation:  o ka sokela pere meetseng, efela o ka se e dire gore e nwe
Proverb: namakgapeletšwa e phuma pitša

XITSONGA
Translation:  u nga yisa hanci laha ku nga na mati kambe a wu nge yi sindzisi ku nwa
Proverb: mhunti yo tiyisa etinyaweni

TSHIVENḒA
Translation:  u nga isa bere maḓini fhedzi u a nga si i ite uri i nwe
Proverb: ṋamakhombetshedzwa i afhula khali