Section 0(9)(d) in UGC (Institutions Deemed to be Universities) Regulations, 2019
(d)The teacher student ratio shall not be less than 1:20 with a faculty strength of not less than 100 (Hundred) teachers and a minimum of 2,000 students on its rolls under the regular class-room mode, and ensure that not more than 10% of the sanctioned posts of teachers is vacant at any point of time;