mudā gopendrasyātmaja-bhuja-pariṣvaṅga-nidhaye
sphurad-gopī-vṛndair yam iha bhagavantaṁ praṇayibhiḥ
bhajadbhis tair bhaktyā svam abhilaṣitaṁ prāptam acirād
yamī-tīre gopīśvaram anudinaṁ taṁ kila bhaje

I daily worship Gopīśvara Sadāśiva, who was devotedly worshipped on the bank of the Yamunā by the loving gopīs who desired the jewel-like embrace of the arms of Śrī Kṛṣṇa, the prince of Vraja, and who thus swiftly attained their desired object.
(Vraja-vilāsa stava 87)

Stavāmṛta Kaṇā Vyākhyā :

Now Śrīpāda Raghunātha praises Bhagavān Sadāśiva Śrī Gopīśvara, who is situated on the bank of the Yamunā. Śrī Sadāśiva has freely taken shelter of the bank of the Yamunā in the transcendental abode of Vraja to worship Śrī Kṛṣṇa and His pleasure potency, Śrī Rādhā and the Vrajasundarīs.  When Śrī Kṛṣṇa’s beloved Vrajasundarīs saw Śrīman Mahādeva situated on the bank of the Yamunā, though, they floated in an ocean of bliss, for they knew that by his grace the company of Śrī Kṛṣṇa would certainly be attained.  

By worshipping Bhagavān Sadāśiva with topmost devotion they would swiftly attained their desired goal, Śrī Kṛṣṇa’s company. From then onwards Śrī Kṛṣṇa’s beloved Vrajasundarīs began to worship Śrī Sadāśiva on the bank of the Yamunā, yearning for the jewellike embrace of Śrī Kṛṣṇa’s arms, and the deity has thence become famous as Gopīśvara. The gopīs attained a jewel by being embraced by Śrī Kṛṣṇa’s arms. It is described in the praises of Śrī Kṛṣṇa by the personified Vedas:

nibhṛta marun mano’kṣa dṛḍha yoga yujo hṛdi yan munaya upāsate tad arayo’pi yayuḥ smaraṇāt
striya-uragendra bhoga bhuja daṇḍa viṣakta dhiyo vayam api te samāḥ samadṛśo’ṅghrisaroja-sudhāḥ
(Bhāgavata 10.87.23)

“O Lord! With rigid yoga-practices the sages worship You in the heart as the undifferentiated brahman, subduing their minds, senses and life-airs, but Your enemies have attained that very same brahman-status by thinking of You in fear and enmity. The gopīs, though, were attached to the embrace of Your snake-like arms and have thus attained the nectar of Your lotusfeet on their breasts. By following in their footsteps we have also attained this nectar from Your lotusfeet!” Desiring this jewel-like embrace of Śrī Kṛṣṇa’s arms the gopīs are worshipping Gopīśvara, being very attached to these arms. The reason is that the worship of Gopīśvara fulfills all desires of everyone. It is described in Śrī Bhakti Ratnākara:

ki apūrva śobhā ei banera bhitora; guṇātīta liṅga rūpa nāma gopīśvara
ei sadāśiva vṛndāvipina pālaya; ihāke pūjile sarva kārya siddha hoy
gopīgaṇa sadā kṛṣṇa saṅgera lāgiyā; nirantara pūje yatne nānā dravya diyā
kohite ki pāri ye mahimā gurutara; gopikā pūjita teṅho nāma gopīśvara
indrādi devatā stuti koroye sadāya; vṛndāvane prīti vṛddhi ihāra kṛpāya

“How wonderfully beautiful it is within this forest! Here is the transcendental liṅga-deity named Gopīśvara. This Sadāśiva is protecting Vṛndāvana and anyone who worships Him attains all perfection. The gopīs always desired to be with Kṛṣṇa and for this they always worshipped (Gopīśvara) with different paraphernalia. Who can describe the great glories of Gopīśvara, who was so named because the gopīs worshipped Him? The love of Vṛndāvana is increasing by he, who is always praised by the demigods, headed by Indra.”

tathāhi- śrīmad gopīśvaraṁ vande śaṅkaraṁ karuṇāmayam
sarva kleśa haraṁ devaṁ vṛndāraṇya rati pradaṁ

“I praise Śrīmad Gopīśvara Śaṅkara, the all-benign, the Lord who destroys all misery and who increases the love of Vṛndāvana.”

tathāca stavāmṛta laharyāṁ-
vṛndāvanāvanipate jaya soma soma maule sanandana sanātana nāradeḍya
gopeśvara vraja vilāsi-yugmāṅghri-padme prema prayaccha nirupādhi namo namas te

“O presiding god of Vṛndāvana! O beautiful moon-crested Lord! O you who are worshipable for Sanandana, Sanātana, Nārada and others! O Gopeśvara! All glories to you! Please give me unconditional love for the lotusfeet of the playful pair of Vraja, Śrī-Śrī Rādhā-Mādhava! I offer my obeisances unto you again and again!” Śrīpāda Raghunātha says: “I always worship this Gopīśvara Sadāśiva! By the grace of Śrī Gopīśvara, who fulfills all desires, I will also attain the perfection of service to the lotusfeet of the Divine Pair. Of this there is no doubt!”

vraja gopī anurāge, nandātmaja bhuja yuge,
āliṅgana divya ratna lābhe
nitya yamunāra tīre, mahāprema sahakāre,
bhakti kori pūje sadāśive

“The Vraja-gopīs passionately desired the divine jewel-like embrace of the arms of Nanda’s son, and for this reason they always went to the bank of the Yamunā with great love to devotedly worship Lord Sadāśiva.”

yāra śubhā karuṇāte, iṣṭa phala acirāte,
labhya hoy sei gopīśvare
sadāśiva bhagavān, deho iṣṭa vara dāna,
bhaji pade pulakita bhare

“By Gopīśvara’s auspicious grace all desires are swiftly fulfilled. O Lord Sadāśiva! Grant me my desired boon! I worship you with goosepimples on my skin!”