Sushruta Samhita
शालाक्यतन्त्रं कौमारं चिकित्सा कायिकी च या । भूतविद्येति चत्वारि तन्त्रे तूत्तरसञ्ज्ञिते ॥४४॥
The four Tantras are: Shalakyatantra, Kumāratantra, Chikitsā Kāyiki, and Bhūta Vidyā. Among these, the Uttara Tantra is the one that is considered superior.
english translation
zAlAkyatantraM kaumAraM cikitsA kAyikI ca yA । bhUtavidyeti catvAri tantre tUttarasaJjJite ॥44॥
hk transliteration by Sanscript