Manusmriti
तां विवर्जयतस्तस्य रजसा समभिप्लुताम् । प्रज्ञा तेजो बलं चक्षुरायुश्चैव प्रवर्धते ॥ ४२ ॥
If he avoids her, while she is in that condition, his wisdom, energy, strength, sight, and vitality will increase.
english translation
tAM vivarjayatastasya rajasA samabhiplutAm । prajJA tejo balaM cakSurAyuzcaiva pravardhate ॥ 42 ॥
hk transliteration by Sanscript