There are two adhikaranas included in the third adhyaya of Brahma sutras by Badarayana related to the discussion of the nature of Brahman. ( There are adhikaranas in the first adhyaya which describe Brahman as Savisesa- full of attributes)
These are titled as Ubhayalingadhikarana and Prakrtaitavattva adhikatanas as per Shankara bhasya to favour the theory of nirvisesa Brahman ( Brahman without attributes)
In Ramanuja bhasya ( Sribhasya) they are named as Ubhayalingadhikarana and Ahikundaladhikarana.
The main sutra of the Ubhayalingadhikarana is as follows:
"na sthAnato'pi parasya ubhayalingam sarvatra hi" ( Vedanta Sutras 3.2.11)
This sutra no doubt refers to the nature of Brahman as is evident from the word 'para', a term that distinguishes it from the individual self which is discussed in earlier sections.
The word "sthanataha" means , on account of its immanence in the souls and the other things in the universe.
The ubhayalinga as commonly understood means two fold nature.
Now, according to Shankara it refers to two modes of description or two forms of Brahman, viz. Brahman devoid of all characteristics ( Nirvisesa Linga) and Brahman as qualified with characteristics ( Savisesa Linga)
Finally, after some explanations and discussion, Shankara concludes Brahman as only nirvikalpa or completely devoid of all characteristics
"samasrayanam visesha rahitam nirvikalapakameva Brahma pratipattavyam" ( Shankara bhasya 3.2.11)
Ramanuja means by Ubhayalingadhikarana Linga the two fold characteristics of Brahman,
1) Brahman as totally free from all defilements ( nirdosatva)
2) Brahman as endowed with numerous auspicious qualities ( Kalyanaikatani - gunatmakatva)
Ramanuja interpretation the Brahma sutra, by taking into consideration the context in which it appears. Regarding the context, it is said that the adhikaranas of the preceding pada present condition of Jivatma in the states of dream, deep sleep, and seeking for the purpose of developing non attachment ( vairagya) by the seeker of moksha.
Badarayana Introduces this strain in order to propmote an ardent craving for the attainment of Brahman by emphasizing the fact that Brahman, unlike jiva, is free from all imperfections and also endowed with auspicious attributes so that it is worthy of aspiring the supreme goal of human endeavour.
According to prima facie, Brahman which abides in the jiva as antaryamin would also be affected with the defects found in the bodies of jiva.
Badarayana as interpreted by Ramanuja, rejects this prima facie view. Ramanuja points out that Brahman inspite of abiding in jiva and other physical entities, is untouched by any defects
"na prthivyadisthanato'pi parasya Brahman aha apurushartha gandhaha sambhavati" ( Ramanuja Bhasya (3.2.11))
This is the implication of the word "na sthAnato'pi" in the sutra.
Why Brahman is not touched by defects?
The answer is given in next Brahma sutra, viz, ubhalingam sarvatra hi, which means that in all Sruti and smriti texts, Brahman is described as possessing two fold characteristics
(1) Free from all defilements ( nirasta - nikhila dosatva) and
(2) Endowed with auspicious attributes ( Kalyana guna - atmakatva)
Thus Chandogya Upanishad 8.1.5 says :
Brahman is free from evil (apahatapapma), free from old age ( vijara) , free from death (vimrtyuh), free from grief (visoka), ...whose needs are self fulfilled ( satyakamaha) and whose desires are not obstructed ( satyasankalpa)
In the above text the two fold characteristics of Brahman is explicitly mentioned. There are many other Upanishad texts referring to either of these aspects of Brahman and these are quoted by Ramanuja in his comment in support of his explanation.
The other important adhikarana Prakrtaitavattvadhikarana.
The main sutra reads as follows:
"Prakrttaitavattvam hi pratisedhati tato bravitica bhuyah" ( Vedanta sutras of Badarayana 3.2.22)
The general meaning is according to shAnkara, that the Upanishadic text " neti neti" negates in respect of Brahman the prediction of the two forms mentioned in the earlier part of the passage and this supported by what is said later on about Brahman.
According to Ramanuja, the sutra means that the text denies only the limited aspects of Brahman describes in the passage because the text further declares the abundance of glory of Brahman.
Further Ramanuja raises the question, as prima facie view which reflects shAnkara's interpretation, whether it would be possible to maintain the ubhayalingatva of Brahman considering the fact that the words " not this, not this" of Upanishadic passage denies Brahman all the previously stated modes viz, murta and amurta (Br.Up 2.3.1) , so that it can only be regarded as sanmatra or pure consciousness only as stated in earlier sutra (3.2.16). The Reply given in the sutra in terms of negation as "not this, not this" does not deny in respect of Brahman the distinctive characteristics or the two modes declared previously. On the contrary it Only denies the Prakrtaitavattva or limited nature of Brahman as previously stated.
In other words , it denies that Brahman possess only this much qualifications as described previously ( Br. Up. 2.3.2 to 5 ). The word 'iti' means limited nature and ' na iti' ( not so) therefore means that Brahman is not distinguished by previous stated modes.
Ramanuja further points out that subsequent to the neti neti significant positive statements are made about Brahman .
Thus states the Upanishad:
"na hy-etaamas iti', nety-anyat param- asti; athanadheyam, satyasya satyam" ( Br.Up.2.3.6)
It means according to Ramanuja there ia nothing higher or greater than Brahman referred to earlier as implied by the two words anyat and para in the text. In other words , no other being which is more glorious both in respect of svarupa and guna ever exists.
This is indicated by the designation ( namadheya) of Brahman as satyasya satyam, which means reality of reals.
Jiva is regarded real ( Satya) because it's svarupa is unchanging, unlike the material objects which undergo total transformation.
<p>Brahman is more real than jivas since the former is never subject to any change unlike the Jnana of Jiva, which during the state of bondage becomes subject to contraction and expansion according to its karma.</p>
<p>Brahman ever remains unchanged both in respect of svarupa and Jnana, as it is free from karma (<em>apahatapapma</em> ). It is there fore the highest reality. </p>
The positive statements made in this upanishad subsequent to negation as 'neti neti' emphasizes this glory of Brahman.
This is the Implication of the words 'bhuyah tato braviti' in the sutra means that the text further says more about brahman.
Thus it follows that the sutra does not prove that Brahman is nirvisesa, but on the contrary it affirms that it Savisesa or endowed with ubhayalinga ( two fold characteristics) as stated by Badarayana i.e.
1. Brahman is free from all defilements
<p><strong>2. Brahman is endowed with Infinote auspicious qualities.</strong></p>
( The details are provided from the book called ' The philosophy of Vedanta sutra" by S.M.Srinivasachari)