🌺 Śrīman Nārāyaṇa 🌺
The Astamukhagandabherunda Kalpa of Vishnu Yamal Tantra talks about Lord Gandabherunda. Though I don't have much idea about This form of the Lord, due to it being a secret tantric deity,who is disclosed only to Advanced sadhakas and The unavailability of Vishnu Yamala,the Sharaba krut astamukhi Gandabherunda stuti is Available online,which I personally consulted from a Tantric sadhak of LakshmiNarsimha,is from Vishnu Yamal.The stuti is as follows :-
ॐ नमो भगवन्विष्णो आदिवैकुण्ठनायक ।
परात्पराय देवाय परेशाय नमो नमः ॥ १॥
~ Om salutations to Bhagvana Vishnu, the Lord of Adi Vaikuntha, The Lord who is higher than the highest, I Bow to The Supreme Lord.
परब्रह्माय विश्वाय विश्वनाथाय ते नमः । परमात्माय गुह्याय जगज्जननहेतवे । सृष्टिस्थित्यन्तरूपाय आदिभूताय ते नमः ॥ २॥
~ O Supreme Brahman, you are the universal master of the universe. O mysterious Supreme Soul, You are the cause of the creation of the universe. Obeisances unto You, who are the original form of creation, maintenance and end. 2॥
नमस्ते नारसिंहाय गण्डभेरुण्डरूपिणे ।
नमस्ते व्याघ्रवक्त्राय सर्वदुःखविनाशिने ॥ ३॥
~ Obeisances to You, who is Narsimha in the form of Ganda bherunda . O tiger-faced Lord, You destroy all suffering. 3॥
नमस्ते अश्ववक्त्राय सर्वविद्याप्रदायिने ।नमो वराहवक्त्राय सर्वसम्पत्प्रदायिने ॥ ४॥
~ Obeisances unto You, who have the mouth of a horse and who bestow all knowledge. Obeisances unto You, who have the mouth of a boar and who bestow all opulences. 4॥
नमो वानरवक्त्राय सर्वशत्रुविनाशिने ।
नमो गरुडवक्त्राय दुष्टपन्नगहारिणे ॥ ५॥
~ Obeisances to the monkey-faced Lord, who destroys all enemies. Obeisances to the face of Garuḍa, who destroys the evil serpents. 5॥
नमो भल्लुकवक्त्राय शत्रुस्तम्भनकारिणे ।
अष्टास्य गण्डभेरुण्डरूपाय शीघ्रगामिने ॥ ६॥
~ Obeisances to You, whose face is like that of an owl, and who stuns the enemy. O eight-headed one, you have the form of Ganda bherunda and you move swiftly. 6॥
कल्पान्तकालनिर्घोषगर्जितायोग्ररूपिणे ।
अनेककोटि शरभभक्षणाय महात्मने ॥ ७॥
~ O form of the fierce, thunderous roar of the end of the millennium. O great soul, you have devoured millions of sharabas. 7॥
द्वात्रिंशत्कोटिहस्ताय द्वात्रिंशायुधधारिणे ।
महते भीमरूपाय नारसिंहाय ते नमः ॥ ८॥
~ He holds thirty-two crore hands and thirty-two weapons. O great and frightening form of Lord Nārasimha, I offer my respectful obeisances unto You. 8॥
॥ श्री अष्टमुखगण्डभेरुण्डनृसिंहकल्पे
ब्रह्मसनत्कुमारसंवादे शरभशिवकृतः स्तवस्सुसम्पूर्णः ॥
This form of Śrī Narasimha swamy devoured millions of sharabas and as I said before, One won't find much about this form anywhere, since this is a secret tantric form,revealed only to Adhikrut sadhakas. Śrī vidya sadhakas Too worship this form of Śrī bhagavāna. Rest, avaliable quotations of different purans like Vaman, garuda,kurma,agni, varaha and so on from works like Śaiva sarvasva khandanam of Vijendra teertha and paramatika upanishad bhasya of Srinivas dikshit (12th century) mention Narsimha himself kills sharaba with his nails. Srinivas dikshit of 12th century quotes the following sloka from Garuda puran in his bhasya :-
हन्तुमभ्यागतं रौद्रं शरभं नरकेसरी ।
नखैर्विदारयामास हिरण्यकशिपुं यथा ॥
निकृत्तबाहूरुशिरा वज्रकल्पमुखैर्नखैः ।
मेरुपृष्ठे नृसिंहेन सहस्रार्कसमं च तत् ॥
~ Narasimha came ready for killing Sharabha, he split him with his nails just as he split Hiranyakashyapu. He cut off Sharabha's arms and heads with his diamond like claws and mouth, via the back of Meru by Narasimha who was shining like the thousand suns.
Padma puran Hails lord Narsimha as "नृसिंहो वीरभद्रजित्" i.e one who conquered Virabhadra (in the form of sharaba,since in context of Lord Narsimha,it was Virabhadra who showed Lord Siva's sharaba rupa).
Vijendra teertha in his saiva sarvasva khandanam quotes the following verses from purans :-
निकृत्य बाहूरुशिरा वज्रकल्पमुखैनखैः । मेरुपृष्ठे नृसिंहेन शरमश्छाय सोऽपतत् ॥
~ Chopping off many heads (of Sharabha) with his nails that were equal to adamantine (vajra), Narasimha who towered like Meru (mountain), also (in addition to hiranyakasipu) overcame Sharabha. (Vaman puran)
स. छुपञ्छाननमष्टपाद पक्षद्वयाढ्यं घननीलगात्रम् स्फुरन्महातीव सहस्रहस्तं सहस्रशस्त्रं शरभस्वरूपम् ॥ करदादय प्रत्येक मुखं छुपुटद्वयम् । विदार्य छ नृसिंहस्तं हिरण्यकशिपु यथा ॥
~ The form of Sharabha had a beak, the face of a lion, with 8 feet and limbs which were a dense black color. It was throbbing with the intensity (of anger), had bloodied hands, with a thousand weapons. Narasimha, acting mercilessly as in the case of hiranyakasipu tore apart with his hands (ie, nails), the beaks on every single one of Sharabha’s faces at their folds. (Kurma puran)
ततः क्शणेन शरभो नादपूरितदिण्मुखः । अभ्याशमगमद्विष्णोर्व्यनददैरवस्वनम् ॥ स तमभ्यागतं दृष्ट्वा नृसिंहः शरभं रुषा । नखैर्विदारयामास हिरण्यकशिपु यथा ॥
~ Thereupon, in a moment, the sound from Sharabha’s mouth intensified in all directions, approaching vishNu (the all-pervading one) with a terrible roar. Narasimha, having seen that arrival of Sharabha with that (sound), became furious and disposed (of Sharabha) with his nails as he did in the case of Hiranyakasipu. (Agni puran)
Now some people may object that since these slokas are not there in present versions of these purans (famous ones like motilal, geeta press),so these slokas are fake. To this, I say that before these verses, Vijendra teerth quotes a verse from skanda puran (as purvapaksha), which mentions Sharaba Pacifying Narsimha and asking him to not repeat such things and even that verse in not found in today's version of skanda puran. Moreover,quoting Fake Slokas would mean giving his opponents like Śaiva advaitin Appaya dikshit (his staunch opponent),a chance to Defame him, so there's no chance of him quoting fake slokas in such an explosive Context.
Even today,several purans like Bhāgavata, vishnu dharmottar (a part of Visnu puran),narsimha,garuda,matasya and Padma clearly show Supremacy of Lord Narsimha over all,including Lord Siva. Here's how Lord Śiva prays to Narsimha in the dhanvantari samhita of Garuda puran :-
“I meditate upon Nrisinha, whose eyes are like the rising sun, and
tongues of blazing fire are emitted from whose lotus-white mouth. I
meditate upon the endless, originless Nrisinha, the original
subjectivity, the most excellent lord of the universe and its final
refuge.”
Source :- https://www.wisdomlib.org/hinduism/book/the-garuda-purana-dutt/d/doc122721.html
Hence, The Lord Defeated Sharabeswar in his man lion form itself,He doesn't even requires His Astamukha Gandabherunda swaroopa.
Some references of Astamukha Gandabheruṇḍa Nṛsimha defeating Sharabheswara and his Associates, from the Mantras of Gandabheruṇḍa kalpa tantra: -
(The destroyer of Sharabha Saluveshwara pakshiraja)
(The destroyer of Aghora Vīrabhadra)
शरभसालुवेश्वरप्राणापहाराय ~ The one who killed Sharabha saluva pakshiraja
एकादशरुद्रगर्वहाराय ~ The one who destroyed the pride of the 11 Rudras
अष्टभैरवप्रभंजनाय ~ The one who destroyed the 8 bhairavas
अघोरवीरभद्रप्राणापहाराय ~ The one who killed Aghora Vīrabhadra
The word used here is महाशरभांतकाय or the one who slayed Mahā Sharabheswara.
I hope this much is enough to convince any genuine seeker of Truth.