Siddhayoga (Vrindamadhava) 48.18

Siddhayoga (Vṛndamādhava) 48.18

vyāyāmaṃ maithunaṃ yuddhaṃ pṛṣṭhayānaṃ gurūṇi ca ..
saṃvatsaraṃ parihareduparūḍhavraṇo naraḥ .. 18 ..