समानयानकर्मा च विपरीतस्तथैव च । तदा त्वायतिसंयुक्तः सन्धिर्ज्ञेयो द्विलक्षणः ॥ १६३ ॥
An alliance which yields present and future advantages, one must know to be of two descriptions, (viz.) that when one marches together (with an ally) and the contrary (when the allies act separately).