you cannot serve two masters
Definition:  it might be impossible to be loyal to more than one obligations, you must always set your priorities straight when it comes to making a tough decision
Usage:  it is either you focus on your studies and leave your partying life, you cannot serve two masters

SEPEDI
Translation:  o ka se direle marena a mabedi
Proverb: phiri ya mekoka mebedi e phatloga noka

XITSONGA
Translation:  u nge luveli tihosi timbirhi
Proverb: timhisi ta mikoka mimbirhi yin'we yi phatluka nyonga

TSHIVENḒA
Translation:  u nga si shumele vhaṋe vhavhili
Proverb: muluvha hoṱhe maputu a a fhela