4.1.110 अश्वादिभ्यः फञ्

Word by word (padaccheda)

Left context अश्व- आदिभ्यः pañcamī · bahuvacanaSubstitute / term prathamā · ekavacana

Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.

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Full reading

अश्व-आदिभ्यः फञ्

Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.

Commentary

The affix फञ् comes in the sense of a गोत्र (Patronymic) descendant after the words अश्व etc.
The anuvritti of angirasa does not extend to this aphorism. Thus अश्व + फञ् = अश्व + आयन 7.1.2 = आश्वायनः 7.2.117 'the grandson or a still lower descendant of Asva'. Similarly आश्मायनः There are some words in this class which already have taken a patronymic affix, e.g, आत्रेय, वैल्य, and आनडुह्य ॥ After these words the affix फञ् of course has the force of a Yuvan affix. The word आत्रेय is formed by त्रि + ढक् 4.1.122, वैल्य = विलि (a Rajarshi) + ञ्यङ् 4.1.171, and आनडुह्य = अमडुह + यञ् 4.1.105. The word शय takes phan only when it denotes an Atreya, as शायायनः, otherwise शायिः with इञ् or शायः with अण् ॥ The word जात takes 'phan' only when the offspring of a male is to be denoted, as जातस्यापत्यं = जातायनः but जाताया अपत्यं = जातेयः with ढक् ॥ The word आत्रेय takes 'phan' when denoting a Bharadvaja, as आत्रेयायनः, otherwise it will take the affix इञ्, which will be elided by 2.4.28, leaving the form आत्रेयः ॥

The words भरद्वाज आत्रेये of the above list mean that when a person born in Atri Gotra is adopted by a person belonging to Bharadvaja Gotra, then the affix is to be added, he of course is an Atreya but gets a new Gotra of Bharadvaja. Thus भारद्वाजायनः, otherwise the form will be भारद्वाजः with अञ् of 4.1.104.

1 अश्व 2 अश्मन् 3 शंख 4 शूद्रक 5 विद 6 पुट 7 रोहिण 8 खर्जूर (खजूर) 9 खण्जार 10 बस्त 11 पिजूल 12 भडिल 13 भण्डिल 14 भडित 15 भण्डित 16 प्रकृत 17 रामोद 18 क्षान्त 19 काश 20 तीक्ष्ण 21 गोलांक 22 अर्क 23 स्वर 24 स्फुट 25 चक्र 26 श्रविष्ठ 27 पविन्द 28 पवित्र 29 गोमिन् 30 श्याम 31 धूम 32 धूम्र 33 वाग्मिन् 34 विश्वानर 35 कुट 36 शप आत्रेये 37 जन 38 जड 39 खड 40 ग्रीष्म 41 अर्ह 42 कित 43 विशंप 44 विशाल 45 गिरि 46 चपल 47 चुप 48 दासक 49 वैल्य 50 (वैल्व) प्राच्य 51 धर्म्य 52 आनडुह्य 53 पुंसि जाते 54 अर्जुन 55 प्रहृत 56 सुमनस् 57 दुर्मनस् 58 नम 59 (मनस्) प्रान्त 60 ध्वन 61 आत्रेय भरद्वाजे 62 भरद्वाज आत्रेये 63 उत्स 64 आतव 65 कितव 66 वद 67 धन्य 68 पाद 69 शिव 70 खदिर 71 भण्डिक 72 ग्रीवा 73 कुल 74 काण 75 नड 76 वीक्ष्य, 77 वह, 78 खेड, 79 नत्त 80 ओजस, 81 नम ॥

Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.