Shatapatha Brahmana 4.5.9.10

4.5.9.10

tadāhuḥ | na vyūhedgrahānprāṇā vai grahā netprāṇānmohayānīti mohayeddha prāṇānyadvyūhettasmānna vyūhet

Now they say, He should not transpose the cups--the cups being the vital airs--lest he should disorder the vital airs; for he would indeed disorder the vital airs, were he to transpose them: therefore he should not transpose (the cups).