पाणिनि खायसे फुंखानिफ्राय मोनथिनो मोनो दि सिगांनि समाव वेद-पाठ खालामनाय समाव उदात्त , अनुदात्त आरो स्वरित मुंनि मोनथाम देंखोखौल` बाहायनाय जायो ।
It is known from some formulas of Panini that initially only three tones - udatt , anudatt and svarit were used during Vedpath .