Manusmriti
मन्येतारिं यदा राजा सर्वथा बलवत्तरम् । तदा द्विधा बलं कृत्वा साधयेत् कार्यमात्मनः ॥ १७३ ॥
When the king knows the enemy to be stronger in every respect, then let him divide his army and thus achieve his purpose.
english translation
manyetAriM yadA rAjA sarvathA balavattaram । tadA dvidhA balaM kRtvA sAdhayet kAryamAtmanaH ॥ 173 ॥
hk transliteration by Sanscript