Hizb 19 opens Juz 10 and is the hizb in which At-Tawba's missing opening formula actually occurs, a textual peculiarity that falls well inside the hizb's second rub al-hizb quarter rather than at either of its boundaries, so the sixty-part scheme gives it no special marking despite its significance to reciters and to scholars of the Quran's transmission.
In tarawih recitation this hizb typically opens the tenth night, and reciters commonly note the missing Bismillah aloud or through a brief pause at that point, a customary practice rather than an instruction carried by the hizb or quarter marks themselves, which treat the crossing from Al-Anfal into At-Tawba the same as any other sura boundary elsewhere in the thirty parts.
Because At-Tawba is substantially longer than Al-Anfal, this hizb marks only the very beginning of a sura whose material will continue across the next several hizb divisions, a case where the sixty-part scheme's length based counting and a single sura's own extent diverge considerably rather than aligning even loosely.
Scholars of the Quran's early written transmission have offered several explanations for the missing opening formula, including that At-Tawba may originally have been conceived as a continuation of Al-Anfal rather than as a fully separate sura, though no single account commands full agreement, and this record does not adjudicate between them.