Verse 11.5.3.4

kiṃ hutvā prakampayasi kiṃ srucam parimṛjya kūrce nyamārjīḥ kiṃ dvitīyam parimṛjya dakṣiṇato hastamupāsīṣadaḥ kim pūrvam prāśīḥ kiṃ dvitīyaṃ kimutsṛpyāpāḥ kiṃ srucyapa ānīya niraukṣīḥ kiṃ dvitīyaṃ kiṃ tṛtīyametāṃ diśamudaukṣīḥ kiṃ jaghanenāhavanīyamapo nyanaiṣīḥ kiṃ samatiṣṭhipo yadi vā etadvidvānagnihotramahauṣīratha te hutaṃ yadyu vā avidvānahutameva ta iti

Preview of English translation:

4. “Why, having offered, dost thou shake it (the spoon)? why, having cleansed the spoon all round (the spout), didst thou wipe it on the grass-bunch? why, having cleansed it a second time all over, didst thou place thy hand on the south (part of the Vedi)? why didst thou eat (of the milk) the first time, and why the second time? why, on creeping away (from the Vedi), didst thou drink (water)? why, having poured water into the spoon, didst thou sprinkle therewith? why didst thou sprinkle it away a second time, and why a third time in that (northerly) direction? why didst thou pour down water behind the Ahavaniya? why didst thou bring (the offering) to a close? If thou hast offered the Agnihotra knowing this, then it has indeed been offered by thee; but if (thou hast offered it) not knowing this, then it has not been offered by thee.”

For a detailled translation, including proper diacritics and footnotes, go the full English translation.