إِلَامَ ...؟ وَحَتَّامَ ...؟
Until when ...? And how much longer ...?
Ilāma derives from ilā and interrogative mā, while ḥattāma derives from ḥattā and mā; the interrogative alif is omitted in both. Their repetition builds a rhythm of reproof and warning.
The preacher varies his interrogative expressions instead of repeating a fixed formula. These are reproachful rhetorical questions rather than requests for dates or factual information.