Astanga Hrudaya
निर्विबन्धं प्रवर्तन्ते कफपित्तानिलाः क्रमात्। (मनःप्रसादः स्वास्थ्यं चावस्थानं च स्वयं भवेत्। वैपरीत्यमयोगानां न चातिमहति व्यथा॥१॥ ) सम्यग्योगे अतियोगे तु फेनचन्द्रकरक्तवत्॥२५॥
Proper bouts – Samyak Yoga - Kapha, Pitta and vata coming out in successive order, without any hindrance, calmness of the mind and cessation of vomit bouts on its own, absence of features of inadequate bouts and feeling of not too much of discomfort are the features of samyagyoga- proper bout.
english translation