Thus after Ali Ibn Husain (a.s) Imamate continued in his generations one after another.
فلا تكون بعد علي بن الحسين عليه السلام إلا في الأعقاب وأعقاب الأعقاب.
Similar narrations
Kitāb al-Ghayba #393“The Imamate will never come together in two brothers after Hasan and Husain (a.s). It will continue in his (Husain’s) progeny one...
Kitāb al-Ghayba #345After Hasan and Husain, Imamate will never come to two brothers because after Ali Ibn Husain, Imamate is only in his progeny, generation...