Complex sentence: On this occasion, Qasim also received the honorific epithet ("laqab ") al-Mu'tamin ("the Trusted"), but Harun also stipulated that Abdallah could, once Caliph, alter the succession in favour of his own sons.
Split into simpler sentences: On this occasion, Qasim also received the honorific epithet ("laqab ") al-Mu'tamin ("the Trusted"). However, Harun also stipulated that Abdallah could, once Caliph, alter the succession in favour of his own sons.