Charak Samhita
वेगाघातात् क्षताच्चापि धातूनां सम्प्रदूषणात् । दोषाः पृथक् समस्ता वा प्राप्य रेतोवहाः सिराः ॥१३८॥
repression of urges, injury, morbidity producing vitiation of dhatu, Dosha individually or collectively reaching to retovaha srotas lead to acute disorders of the shukra(semen).
english translation
vegAghAtAt kSatAccApi dhAtUnAM sampradUSaNAt । doSAH pRthak samastA vA prApya retovahAH sirAH ॥138॥
hk transliteration by Sanscript