Charak Samhita
गुरुः कठिनसंस्थानो गूढमांसान्तराश्रयः। अविवर्णः स्थिरश्चैव ह्यपक्वो गुल्म उच्यते ॥४०॥
॥ Apakva gulma (intial non-suppurative stage)॥ Immovable lump of gulma which is deeply situated under the flesh and hard and heavy to palpate and whose color remains unchanged is considered as apakva i.e. non-suppurative
english translation
guruH kaThinasaMsthAno gUDhamAMsAntarAzrayaH। avivarNaH sthirazcaiva hyapakvo gulma ucyate ॥40॥
hk transliteration by Sanscript