Rasarnava 2.107

2.107

oṣadhyo maṇḍape prācyāṃ rasasvedo 'gnigocare
dakṣiṇasyāṃ lohamāro nairṛtyāṃ peṣaṇādikam //

The herbs are in the eastern part of the pavilion; the sweating of mercury is in the southeast; / the killing of metals is in the south; grinding and so forth is in the southwest;