mentaries on Pāṇini.) An option, enjoined by a rule, if the
latter does not refer to, and therefore is not a restriction of,
another, previous or subsequent, rule; it is distinct there-
fore from the prāptavibhāṣā or the option enjoined by a rule
which is a restriction of another rule, and the ubhayatravi-
bhāṣā or the option enjoined by a rule some portion of
which is and some portion of which is not a restriction of
another rule. It follows from this distinction that in Pā-
ṇini's definition of vibhāṣā (I. 1. 44. ‘na veti vibhāṣā’) both
terms na and vā apply simultaneously only to the prāptavi-
bhāṣā and ubhayatravibhāṣā and even more properly to the
latter alone, while only vā can be predicated of the aprā-
ptavibhāṣā, its purport not being negative with regard to
another rule but purely optional in itself; Patanjali: tatra
yā tāvadaprāpte vibhāṣā tatra pratiṣedhyaṃ nāstīti kṛtvā vetyanena
vikalpo bhaviṣyati . yā hi prāpte vibhāṣā tatrobhayamupasthitaṃ
bhavati . neti ca veti ca . tatra netyanena pratiṣiddhe vetyanena vi-
kalpo bhaviṣyati ..…ubhayatravibhāṣārthā ceyaṃ saṃjñā . prā-
ptavibhāṣāyāmaprāptavibhāṣāyāṃ ca saṃjñākaraṇasyānupayogāt .
tathā hi . prāptavibhāṣāsu pakṣe nivṛttiḥ kriyate pakṣe tu pravṛttiḥ
sthitaiva . aprāptavibhāṣāsu ca pakṣe kāryasya pravṛttiḥ kriyate pa-
kṣāntare tvapravṛttiḥ sthitaiveti nāsti tatra saṃjñāphalam &c.…
(Nagojibh.: evaṃ ca kevalaprāptavibhāṣāyāmubhayatravibhāṣāyāṃ
ca krameṇa niṣedhavikalpayorupasthitiḥ . śuddhāprāptavibhāṣāyāṃ
tu niṣedhasyānvayāyogyatvācchuddhavikalpopasthitiriti tātparyam
&c. &c.) Such aprāptavibhāṣā are in Pāṇini, e. g. in the
Sūtras: I. 1. 32, 2. 3, 2. 16, 3. 43; II. 4. 12; III. 1. 38, 1. 61,
3. 188, 4. 24; VI. 1. 208(?), 2. 161, 3. 59, 3. 72, 3. 106; VII. 3. 9,
4. 81; VIII. 1. 26, 2. 21; when in consequence of such an in-
terpretation of the option, the Sūtra I. 2. 16 e. g. becomes dis-
connected from I. 2. 15, II. 4. 12 from II. 4. 6, III. 1. 61 from
III. 1. 66, III. 4. 24 from III. 4. 22 &c. &c.--Compare also
prāptavibhāṣā, ubhayatravibhāṣā and vyavasthitavibhāṣā. E. a-
prāpta (in the sense of a locative) and vibhāṣā.