After completing the paragraph of Yehi Chebod, one should proceed immediately to the recitation of Ashreh. Ashreh consists of the 145 th chapter of Tehillim – "Tehila Le'David" – which is introduced by two other verses from Tehillim: "Ashreh Yosheveh Betecha…" (84:5) and "Ashreh Ha'am She'kacha Lo…" (144:15). While one must of course avoid interruptions at any point during Pesukeh De'zimra, the Kabbalists taught that one must be especially careful not to make any interruption between the end of Yehi Chebod and the beginning of Ashreh. In fact, the Ben Ish Hai (Rav Yosef Haim of Baghdad, 1833-1909) ruled that if one hears Kaddish right when he concludes Yehi Chebod, then he should respond to Kaddish but then repeat the final three verses of Yehi Chebod so he can connect the end of Yehi Chebod with Ashreh without any interruption. Alternatively, if one hears during his recitation of Yehi Chebod that Kaddish will soon be recited, he should pause in the middle of Yehi Chebod so he can respond to Kaddish then, and not at the end of Yehi Chebod. Hacham Ovadia Yosef disagreed, and maintained that responding to Kaddish does not constitute a Hefsek (interruption). In his view, then, if one hears Kaddish between Yehi Chebod and Ashreh, he responds to Kaddish and then proceeds to Ashreh as usual. Summary: It is critically important to proceed to Ashreh immediately after concluding the recitation of Yehi Chebod. According to some opinions, if one hears Kaddish between Yehi Chebod and Ashreh, then although he should respond to Kaddish, he should repeat the final three verses of Yehi Chebod before beginning Ashreh. Others disagree and maintain that the person in this case simply proceeds to Ashreh as usual.