How does the cliche, "like father,like son" relate to baba and amir ?

They both carried a huge secret that they didn’t tell others, one that hurt the ones they loved in the process and a secret that they regretted in many different ways, shapes and forms. One of the symbols that was presented in the memory recollection of when Amir was trying to convince his father to get new servants appears on page 236-237. “I remember the day we were planting tulips, when I had asked Baba if he’d ever consider getting new servants. Hassan’s not going anywhere, he’d barked. He’s staying right here with us, where he belongs. This is his home and we’re his family. He had wept, wept, when Ali announced he and Hassan were leaving us.”