Keepआदिरिति द्व्यक्षरं प्रतिहार इति चतुरक्षरं तत इहैकं तत्समम् ॥ २.१०.२ ॥Word by word (11)In plain wordsĀdi has two syllables, pratihāra has four syllables: taking one from the latter to the former, they are equal.