वह्निस्त्रीपथिसेवानां आदौ वर्जनं आचरेत् ॥ १.६३ ॥

vahnistrīpathisevānāṃ ādau varjanaṃ ācaret ॥ 1.63 ॥

Throughout the period of time during which yoga is practiced, Agni should not be used (food with either a heating vipak or virya), nor should sex, etc.