Charak Samhita
पिच्छिलं पाण्डुवर्णं च गुरु स्निग्धं च शीतलम् । स्रवत्यसृक् श्लेष्मलं च घनं मन्दरुजाकरम् ॥२१८॥
The menstrual blood flows out as greasy (slimy), pale, heavy, unctuous, cold, mixed with kapha, viscous and with mild pain.
english translation
picchilaM pANDuvarNaM ca guru snigdhaM ca zItalam । sravatyasRk zleSmalaM ca ghanaM mandarujAkaram ॥218॥
hk transliteration by Sanscript