Verse 1.10.11

एवमेव प्रतिहर्तारमुवाच प्रतिहर्तर्या देवता प्रतिहारमन्वायत्ता तां चेदविद्वान्प्रतिहरिष्यसि मूर्धा ते विपतिष्यतीति ते ह समारतास्तूष्णीमासांचक्रिरे ॥ १.१०.११ ॥
॥ इति दशमः खण्डः ॥

evameva pratihartāramuvāca pratihartaryā devatā pratihāramanvāyattā tāṃ cedavidvānpratihariṣyasi mūrdhā te vipatiṣyatīti te ha samāratāstūṣṇīmāsāṃcakrire || 1.10.11 ||
|| iti daśamaḥ khaṇḍaḥ ||

11. He again said the same thing to the person singing the pratihāra: ‘O Pratihartā, if you sing the pratihāra without knowing anything about the deity relating to it, your head will fall.’ At this, they stopped their respective hymns and remained silent.

Word-for-word explanation:

Evam eva pratihartāram uvāca, he said the same thing to the person who was singing the pratihāra; pratihartaḥ, O Pratihartā; yā devatā pratihāram anvāyattā, that god to whom your pratihāra relates; tām avidvān, without knowing anything about him; cet pratihariṣyasi, if you sing the pratihāra; te mūrdhā vipatiṣyati iti, your head will fall; te, they [the singers]; ha samāratāḥ, stopped; āsāñcakrire tūṣṇīm, [and] remained silent. Iti daśamaḥ khaṇḍaḥ, here ends the tenth section.

Commentary:

When Uṣasti spoke thus to the singers, they all stopped their hymns. They were afraid they would lose their heads because they did not know about the deities