Mahabharata 3.33.24

संख्यातुं नैव शक्यानि कर्माणि पुरुषर्षभअगारनगराणां हि सिद्धिः पुरुषहैतुकी

saṃkhyātuṃ naiva śakyāni karmāṇi puruṣarṣabhaagāranagarāṇāṃ hi siddhiḥ puruṣahaitukī

Our plain-language meaning of this verse is waiting for scholar review.