Charak Samhita
सा स्त्री वृष्यतमा तस्य नानाभावा हि मानवाः। अतुल्यगोत्रां वृष्यां च प्रहृष्टां निरुपद्रवाम् ॥१५॥
The person, who is healthy and desirous of a child, should enter in to sexual intercourse with a woman who belongs to a different clan, who is free from diseases,
english translation
sA strI vRSyatamA tasya nAnAbhAvA hi mAnavAH। atulyagotrAM vRSyAM ca prahRSTAM nirupadravAm ॥15॥
hk transliteration by Sanscript