I will use the examples of Agni-Hotra, Soma, Ashva-Medha and Purusha.
1. Agni-Hotra
Samhithaa
Rg Veda 1.1.1:
With Accents:
अ॒ग्निमी॑ळे पु॒रोहि॑तं य॒ज्ञस्य॑ दे॒वमृ॒त्विज॑म् । होता॑रं रत्न॒धात॑मम् ॥
Plain:
अग्निमीळे पुरोहितं यज्ञस्य देवमृत्विजम् । होतारं रत्नधातमम् ॥
Transliteration:
agnim īḻe purohitaṃ yajñasya devam ṛtvijam | hotāraṃ ratnadhātamam ||
Translation:
I glorify Agni, the high priest of the sacrifice, the divine, the ministrant, who presents the oblation (to the gods), and is the possessor of great wealth.
Krishna Yajur Veda, Tattireeya Samhithaa 1.5
अग्ने॑ व्रतपते व्र॒तं च॑रिष्यामि॒ तच्छ॑केयं॒ तन्मे॑ राध्यताम्। इ॒दम॒हमनृ॑तात् स॒त्यमुपै॑मि ॥५॥
अग्ने व्रतपते व्रतं चरिष्यामि तच् छकेयं तन् मे राध्यताम् । इदम् अहम् अनृतात् सत्यम् उपैमि ॥
Braahmanam
Shathaaptha Braahmana 2.3.1.1-2:
Transliteration:
sūryo ha vā agnihotram | tadyadetasyā agra āhuterudaittasmātsūryo’gnihotram
sa yatsāyamastamite juhoti | ya idaṃ tasminniha sati juhavānītyatha yatprātaranudite juhoti ya idaṃ tasminniha sati juhavānīti tasmādvai sūryo’gnihotramityāhuḥ
Translation:
1] The Agnihotra, doubtless, is the Sun. It is because he rose in front (agre) of that offering, that the Agnihotra is the Sun.
2] When he offers in the evening after sunset, he does so thinking, “I will offer, while he is here, who is this (offering);” and when he offers in the morning before sunrise, he does so thinking, “I will offer, while he is here, who is this (offering):” and for this reason, they say, the Agnihotra is the Sun.