Charak Samhita
पूतिगन्धान् विवर्णांश्च बहुस्रावान्महारुजः । व्रणानशुद्धान् विज्ञाय शोधनैः समुपाचरेत् ॥८३॥
॥ Vrana shodhana (local purification of ulcers)॥ Wounds with foul odor, abnormal color, profuse discharge and intense pain should be known as dushta vrana (unclean) and as such wounds should be treated with cleansing agents.
english translation
pUtigandhAn vivarNAMzca bahusrAvAnmahArujaH । vraNAnazuddhAn vijJAya zodhanaiH samupAcaret ॥83॥
hk transliteration by Sanscript