The Earlier and Later Upaniṣads: A Comparative Study

The Supreme Wisdom of the Upaniṣads: An Introduction
By Klaus G. Witz
Dayānanda's thought and spiritual understanding are not easy to penetrate , and I found Parmanand ( transl . ) , Svāmī Dayānanda Sarasvati's Rg - Vedādi Bhāşya Bhūmikā . New Delhi : Meharchand Lachhmandas , 1984 , very helpful . 107.
The Upanishads: Kena and other Upanishads

Remove this eternal motion, eternal mutability, eternal multiplicity from the idea of Prakriti and we arrive at something we cannot recognize, ... Eternal mutability, likewise, can lead to nothing but eternal unrest and disorder.
Suresvara'S Vartika On Yajnavalkya'S-Maitreyi Dialogue
By Shoun Hino, Sureśvara
... Nais 3.1 ( p . 253 ) , K. S. MURTY , Revelation and Reason in Advaita Vedānta , Delhi : Motilal Banarsidass , 1974 ... 3.1 and 4.7 thus : caturvidhānvaya- vyatirekȧbhyām ; dṛśyatvādi - caturvidhänvayavyatireka - lakṣaṇo nyāyaḥ . . . 5 ...
Sureśvara's Vārtika on Aśva and Aśvamedha Brāhmaṇa
By Sureśvarācārya
... the Aśvamedha , who knows about the performance of the sacrifice , the horse and the fire which is to be collected ( from whatever house of ( a fire worshiper ) -all ( this ) as Prajapati , Arka , the result of the ( performance of the ) ...