There are many stories of Sati, chaste women. Nala-damayanti. Her husband became so poverty-stricken. He was king, but he became later on so poverty-stricken that he had no sufficient cloth. The husband and wife was putting on the same cloth, half and half. So still, still there was no divorce. You see. Still the woman did not consider… She was also king's daughter. But the husband has fallen down to so much poverty-stricken condition. "So why shall I live with him?" These are some of the extreme examples of chastity. Not to speak of olden days, I have seen in Bombay, in 1935 or '34, on the roadside, there was a beggar. The beggar, the face was defaced. Might be some accident. His eyes and everything became defaced. He could not see, everything became useless. So he, he was sitting on the roadside, and his wife also, also sitting. But I saw that beggar was neat and clean. The wife was also neat and clean. The wife's business was that to keep the husband always neat and clean and fresh and bring him there and again take him at home. Young woman. So I could understand that the wife is so chaste. She has not left such ugly husband. Because his face was defaced. And helping him. Because they require some money.

From Srila Prabhupada's lecture on Bhagavad-gita 1.40 — London, July 28, 1973