empty bags cannot stand upright
Definition:  a poor or hungry person cannot survive, remain honest or discharge his duties effectively; a person who is void of accomplishment cannot be successful
Usage:  you cannot expect your employees to work throughout the day without lunch time, if they do not eat, they will not be effective because empty bags cannot stand upright

SEPEDI
Translation:  mekotla ya go se be le selo ga e eme thwii
Proverb: tšie e fofa ka mošwang

XITSONGA
Translation:  tibege leti nga riki na nchumu a ti swi koti ku yima thwii
Proverb: tsotsi yi bamba loko yi xurhe

TSHIVENḒA
Translation:  bege dzi si na tshi na tshithu a dzi koni u ima tswititi
Proverb: a lu khwaṱhi fhedzi luṋunḓu lu khwaṱha lu na thanda nga ngomu