if you run after two hares, you will catch neither
Definition:  if you want to achieve your goals, you should concentrate on one thing at a time
Usage:  I did not manage to submit my article, because I was busy with another book chapter; I forgot the saying ‘if you run after two hares, you will catch neither’

SEPEDI
Translation:  ge o ka ketimiša mebutla ye mebedi, o ka se sware le o tee
Proverb: nonyana phakuphaku e bea lee le tee

XITSONGA
Translation:  loko u canca mimpfundla yimbirhi, a wu nga khomi na wun’we
Proverb: ribye rin’we a ri dlayi swinyanyana swimbirhi xikan’we

TSHIVENḒA
Translation:  arali wa pandamedza mivhuḓa mivhili, a u nga fari na muthihi
Proverb: mutshenzhe a u na zwivhili