Brihat Samhita
ज्योतिःशास्त्रं अनेकभेदविषयं स्कन्धत्रयाधिष्ठितं तत्कार्त्स्न्यौपनयस्य नाम मुनिभिः संकीर्त्यते संहिता । स्कन्धे अस्मिन्गणितेन या ग्रहगतिस्तन्त्राभिधानस्त्वसौ होराअन्यो अङ्गविनिश्चयश्च कथितः स्कन्धस्तृतीयो अपरः ॥ १-०९ ॥
Jyotiṣa-Śāstra treats of many different subjects and consists of three sections. The sages call the whole by the general name of Saṃhitā. This section which treats of the motions of the planets is called the Tantrā-śāstra (Saṃhitā or natural astrology).
english translation
jyotiHzAstraM anekabhedaviSayaM skandhatrayAdhiSThitaM tatkArtsnyaupanayasya nAma munibhiH saMkIrtyate saMhitA । skandhe asmingaNitena yA grahagatistantrAbhidhAnastvasau horAanyo aGgavinizcayazca kathitaH skandhastRtIyo aparaH ॥ 1-09 ॥
hk transliteration by Sanscript