Rav Shimshon Aharon Polinsky zt’l was known as the Tepliker Rov and was a leading Posek in Yerushalaim. He once walked into his bais medrash a few days before Pesach and saw that it was full of young men sitting and learning. He immediately ascended the bimah and announced, ‘I have a long list of almanos who need help preparing for yomtov. Who wants to help them?’
The young men jumped up and offered to help. They all wanted a share in this great mitzvah. They all lined up, and the Rov gave each of them a folded paper with the name and address of a woman in need of help.
When they opened the papers, each one was shocked to see his own address. The Rov was hinting that, of course, it is a big mitzvah to help a widow, but one also must help his own wife.