Rav Tzvi Pesach Frank ZT”L was a Rav in Yerushalayim during the Ottoman era, the British mandate, and after the State of Israel was founded until 1960, when he passed away. During much of this time, the residents of Yerushalayim were extremely poor. A woman was uncertain whether the chicken that she had purchased was Kosher, so she brought it to Rav Frank for a ruling. Upon examination, Rav Frank realized that the chicken was Treif (not Kosher). He also realized that the woman, like many during that time, was very poor. Rav Frank did not want to tell her that her chicken was Treif, because she had no money to purchase another one. He also did not want to lie and tell her that it was Kosher. Accordingly, he quietly asked his wife if they had a chicken in the house. She nodded affirmatively and gave it to him. He brought out the second chicken and told the woman truthfully, "This chicken is completely Kosher according to all opinions!" The woman did not realize that her chicken had been switched with Rav Frank’s. She was relieved to hear the Rav’s ruling and went happily on her way.
