Charak Samhita
पुलाकोदकसङ्काशः स्रावः श्यावारुणप्रभः । वलयीकुरुते चापि कठिनश्च परिग्रहः ॥१७०॥
Further, appearance of watery discharge like pulaka (rice water), or blackish or reddish in color, ring formation, hardening of penile circumference;
english translation
pulAkodakasaGkAzaH srAvaH zyAvAruNaprabhaH । valayIkurute cApi kaThinazca parigrahaH ॥170॥
hk transliteration by Sanscript