इरयो रे

Thus कं स्विद्गर्भं प्रथमं दध्रे आपः (Rig X. 82. 5) या स्य परिदध्रे ॥ In दध्रे, the आ of धा is elided before the affix इरे by 6.4.64, the रे substitution being considered as asiddha 6.4.22 for the purposes of the elision of आ ॥ Sometimes the substitution does not take place, as परमाया धियोग्निर्म्माणि चक्रिरे ॥ Here इट् augment is first added to रे after the सेट् roots and the affix thus becomes इरे, then रे is substituted again for this इरे by this sutra, thus the affix is brought back to its original condition. To show this repetition — रे — इरे — रे the sutra has exhibited the word इरयोः in the dual number.,