6.1.118
आपोजुषाणोवृष्णोवर्षिष्ठेऽम्बेऽम्बालेऽम्बिकेपूर्वे
Operational rule vidhi
In the यजुर्वेद , the short अ is retained after आपो , जुषाणो , वृष्णो , वर्षिष्ठे and also in and after अम्बे or अम्बाले when they stand before अम्बिके.
Word by word (padaccheda)
Substitute / term आपो- जुषाणो- वृष्णो- वर्षिष्ठे- अम्बे- अम्बाले- अम्बिकेपूर्वे prathamā · dvivacana
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
Full reading
आपो-
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
In the यजुर्वेद , the short अ is retained after आपो , जुषाणो , वृष्णो , वर्षिष्ठे and also in and after अम्बे or अम्बाले when they stand before अम्बिके।
Thus आपो अस्मान् प्रातरः शुन्धयन्तु (Yaj. IV. 2). जुषाणो अप्तुराज्यस्य ( Yaj. V. 35), वृष्णो अंशुभ्यां गभस्ति पूतः (Yaj. VII.I). वर्षिष्ठे अधिनाके ॥ The Vajasaneyi Sanhita has वर्षिष्ठेऽधि (V.S I.22): The Taittariya Sanhita has वर्षिष्ठे अधि ॥ (I.I.8. I.4.43, 2.5.5.4) अम्बे अम्बाले अम्बिके (V. S. 23.18 where the reading is अम्बे अम्बिकेऽम्बालिके) but Taittariya Sanhita VII.4.19. I, and Taittariya Brahmana III.9.6. 3 has अम्बे अम्बाल्यम्बिके ॥ The words अम्बे &c, though in the Vocative, do not shorten their vowel by 7.3.107, because they have been so read here.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.