Ashtangasamgraha 3.107

3.107

purovātātaparajastuṣāraparuṣānilān |

anṛjuḥ kṣavathūdrārakāsasvapnānnamaithunam ||

[One should avoid] headwind, direct sun, dust, frost, and harsh winds; / crooked postures, sneezing, belching, coughing, sleeping, eating, and intercourse [in a crooked posture];