Bhakti-rasāmṛta-sindhu .3.21
yathā va –
[yathaa va –]
balasya balino balāt suhṛd-anīkam āloḍayan
[balasya balino balaat suhrid-aneekam aalodayan]
payodhim iva mandaraḥ kṛta-mukunda-pakṣa-grahaḥ |
[payodhim iva mandarah krita-mukunda-paksha-grahah |]
janaṁ vikaṭa-garjitair vadhirayan sa dhīra-svaro
[janam vikata-garjitair vadhirayan sa dheera-svaro]
hareḥ pramadam ekakaḥ samiti bhadraseno vyadhāt ||21||
[hareh pramadam ekakah samiti bhadraseno vyadhaat ||21||]
Blended reading (Sanskrit + English inline)
yathā va –
balasya balino balāt suhṛd-anīkam āloḍayan
payodhim iva mandaraḥ kṛta-mukunda-pakṣa-grahaḥ |
janaṁ vikaṭa-garjitair vadhirayan sa dhīra-svaro
hareḥ pramadam ekakaḥ samiti bhadraseno vyadhāt ||21||
Another example: The deep voiced Bhadrasena, on Kṛṣṇa’s side, deafening the friends on strong Balarāma’s side by his harsh roaring, churned them all by himself like the Mandara Mountain churning the ocean. This gave great pleasure to Kṛṣṇa.
Purport
Bhadrasena therefore left the party of Balarāma and joined Kṛṣṇa, and he agitated his friends as much as the Mandara Hill had agitated the whole ocean. By his roaring sounds he deafened all his friends, and he inspired Kṛṣṇa with his chivalrous activities.
— A.C. Bhaktivedanta Swami Prabhupāda
Gauḍīya Ācāryas
Jīva Gosvāmī
Gauḍīya
Durgama-saṅgamanī
Commentary
Ekakaḥ is the same as the more common ekākī, meaning alone, by oneself. This follows from the rule ekādākin cāsahāva: the word eka when it means alone can take the form ekākī or ekakaḥ (Pāṇini 5.3.52) Amara-kośa says ekākītveka ekakaḥ: ekākī means the same as eka and ekakaḥ. Sometimes instead of ekakaḥ the word ekala is found in the verse but this a writing mistake.
My note
Source: vedabase.io