Natyashastra
एकद्व्यङ्गवरं ज्ञेयं वैहायसकमेव च । अस्य चाङ्गत्रयेऽतीते प्रयोगमुपपादयेत् ॥ २०८॥
The minimum is one or two limbs, and this applies to the Vaihāyasaka as well. In its three limbs, previous applications should be followed.
english translation
ekadvyaGgavaraM jJeyaM vaihAyasakameva ca । asya cAGgatraye'tIte prayogamupapAdayet ॥ 208॥
hk transliteration by Sanscript