The Rav of Ramat Chen, Rav Y. Auerbach, the nephew of Rav Shlomo Zalman Auerbach, z"tl was orphaned from his mother and father, and Rav Shlomo Zalman took care of all his needs. When he married, Rav Shlomo Zalman took the place of his father at the wedding. The wedding took place in Tel Aviv, and the chassan and kallah were planning on living in Tel Aviv after the wedding.
After the wedding, Rav Shlomo Zalman informed the family that he wished to spend the night in Tel Aviv. All the relatives were shocked since they were sure that Rav Shlomo Zalman would return directly to his house in Yerushalayaim after the wedding. Whoever was familiar with Reb Shlomo Zalman's tight schedule of learning and davening, knew that it was very rare that he spent a night away from his home, if at all.
For many years, Rav Shlomo Zalman's nephew was unaware of the reason his uncle decided to stay the night in Tel Aviv. He eventually discovered the reason when he merited to also tend to the needs of an orphan, including accompanying him to the chupah. Rav Shlomo Zalman called him before the wedding and said, "I hope that you do for the orphaned chassan what I did for you." His nephew didn't understand what Rav Shlomo Zalman was referring to, until he reminded him about the night after his wedding when he stayed the night in Tel Aviv. Rav Shlomo Zalman explained, "Every chassan and kallah receives many gifts on the day of their wedding. One of the happiest moments after the chasunah is when the young couple opens their presents, and afterwards they show them off to their parents. You had no parents, and I knew you wouldn't be able to enjoy these happy moments. Therefore, I stayed in Tel Aviv the night after the wedding so that you could show me your presents the next day."