Source: TW
Some of the brahmayAmala transmission state:
गारुडे भूततन्त्रे तु
बाल-तन्त्रे तु भैरवि ।
नय-सिद्धान्त-तन्त्र-स्थे
साधकाः संप्रयोजितः ।
कुरुते सर्वकर्माणि न
च सङ्करताम् व्रजेत् ।
This is curious in multiple ways, though it is possible the verses are corrupt. Of the 5 srotAMsi the bhUta, garuDa and siddhAnta are clear. But bhairava and vAma are missing. Since naya-nayottara are part of the vAma canon.
It is likely that naya is vAma.
But bAla is never associated with bhairava.
Instead, it may be identified with the rAvaNa& kaumAra tantra-s that