Yōga Sūtra 2.27

तस्य सप्तधा प्रान्तभूमिः प्रज्ञा।

tasya saptadhā prāntabhūmiḥ prajñā।

[तस्य सप्तधा प्रान्तभूमिः प्रज्ञा।
tasya = it's; saptadhā = seven-fold; prāntabhūmiḥ = dwelling spheres; prajñā = provides insight;]

It's (discriminative knowledge) seven-fold dwelling spheres provide insight.