Kālābhrām śyāmālāngīm vigalita cikurā khaġgamundābhirāmām

Trāsa trāņeşţadātrīm kuņapagaņaśiro mālinīm dīrghanetrām.

Samsārasyaikasārām bhavajana na harāmbhāvitobhāvanābhiḥ

Ksantavyo me'parādhaḥ prakațita vadane kāmarūpe karāle .. 8..

~ kali apradh Kshama mapan stotra

Wishing you a very auspicious kali puja and Diwali. May the grace of bhagabati be upon everyone. Jay Maa kali

Narayan suktam a hymn to lord Shiva

r‌taṁ satyaṁ paraṁ brahma puruṣaṁ kr‌ṣṇapiṅgalam

ūrdhbarētaṁ birupākṣaṁ biśbarupāẏa bai namō namaḥ ||"

(kr‌ṣṇa-yajurvēda/ taittirīẏa āraṇyaka/ 10th prapāṭhaka- pariśiṣṭa/23th anubāka)

●sāẏaṇa bhāṣya(Sayanacharya's Commentary)

" yadētaṯparaṁ brahma taṯsatyamabādhyam | satyatbaṁ ca dbibidhaṁ byābahārikaṁ pāramārthikaṁ ca |.... Tādr‌śaṁ brahma bhaktānugrahāyōmā-mahēśbarātmaka puruṣarupaṁ bhabati | tatra dakṣiṇē mahēśbarabhāgē kr‌ṣṇabarṇē umābhāgē bāmē piṅgalabarṇaḥ | sa ca yōgēna sbakīẏaṁ rētō brahmarandhrē dhūtbōrdhbarētā bhabati | trinētratbādbirupākṣaḥ | tādr‌śaṁ paramēśbaraṁ anuśrutyēti śēṣaḥ |"

He who is the supreme Brahman is the true form.  His truth is both vyabahārika(practical) and pāramārthika (transcendental). 
That (Nirguna) Brahma (transcendental) for the purpose of bestowing grace upon the devotees assumes the form of Uma-Maheshvara
(i.e. manifests as Ardhanarisvara Sadasiva from formless Paramsiva). His right side is Maheshwara(Krishna varna - Dark complexioned) and his left side is Uma (Pingal Varna - deep yellow complexioned)

He who transmits (upwards) his Tejasha Shakti (i.e. Kundalini Parasakti) towards the Brahmarandhra (Sahasrara padma) by Yoga, he is the Supreme Virupaksha. This Swaroopam of the Parameshwara is Anushruti i.e can be known through Shruti shastras.

Narayan suktam a hymn to lord Shiva

Bhishma said, 'I am quite incompetent to recite the virtues of Mahadeva of highest intelligence. He pervades all things in the universe and yet is not seen anywhere. He is the creator of universal self and the Pragna (knowing) self and he is their master. All the deities, from Brahman to the Pisacas, adore and worship him. He transcends both Prakriti and Purusha. It is of Him that Rishis, conversant with Yoga and possessing a knowledge of the tattvas, think and reflect. He is indestructible and Supreme Brahman. He is both existent and non-existent. Agitating both Prakriti and Purusha by means of His energy, He created therefrom the universal lord of creatures, viz., Brahma. Who is there that is competent to tell the virtues of that god of gods, that is endued with supreme Intelligence? Man is subject to conception (in the mother’s womb), birth, decrepitude, and death. Being such, what man like me is competent to understand Bhava? Only Narayana, O son, that bearer of the discus and the mace, can comprehend Mahadeva. He is without deterioration. He is the foremost of all beings in attributes. He is Vishnu, because of his pervading the universe. He is irresistible. Endued with spiritual vision, He is possessed of supreme Energy. He sees all things with the eye of Yoga. It is in consequence of the devotion of the high-souled Krishna to the illustrious Rudra whom he gratified. O Bharata, in the retreat of Vadari, by penances, that he has succeeded in pervading the entire universe. O king of kings, it is through Mahesvara of celestial vision that Vasudeva has obtained the attribute of universal agreeableness,—an agreeableness that is much greater than what is possessed by all articles included under the name of wealth.[1] For a full thousand years this Madhava underwent the austerest penances and at last succeeded in gratifying the illustrious and boon giving Siva, that Master of all the mobile and the immobile universe. In every new Yuga has Krishna (by such penances) gratified Mahadeva. In every Yuga has Mahadeva been gratified with the great devotion of the high-souled Krishna. How great is the puissance of the high-souled Mahadeva,—that original cause of the universe,—has been seen with his own eyes by Hari who himself transcends all deterioration, on the occasion of his penances in the retreat of Vadari undergone for obtaining a son.[2] I do not, O Bharata, behold any one that is superior to Mahadeva. To expound the names of that god of gods fully and without creating the desire of hearing more only Krishna is competent. This mighty-armed one of Yadu’s race is alone competent to tell the attributes of the illustrious Siva. Verily, O king, only he is able to discourse on the puissance, in its entirety of the Supreme deity?'

~ Mahabharata, Anushasana parva, ch 14

In the Anśmad Agama shiva clearly says

" Sakalaḥ sūryarupastu nişkalaḥ śiba ēba ca" -

Meaning - Surya is the Saguna(with quality) prakash of nishkala(pure), nirguna(qualityless) Paramashiva.

Sākṣāt brahma kadāpi nana, baram paramēśbara śiba-i sākṣāt sūryarūpa dhāraņa karēna

" srastā bhānurmahātējā brṣṭīnām biśbadr zhúibhuḥ. Sōhapi sākṣād dbijaśrēṣṭhāścēśānaḥ paramaḥ śibaḥ 62 sa ēba tējastrōjastu balam biprā yaśaḥ sbayam |.63
Satyam rtam tathā bāyurambaram khacaraśca saḥ. Lōkapālō haribrahmā rudraḥ sākṣānmahēśbaraḥ 64 sahasrakiraṇaḥ śrīmānastahastah sumangalah | ardhanārībapuḥ sākṣāt- trinētrastridaśādhipaḥ 64 ||"

~Linga Mahapurana, Purva bhag, ch 54

Chapter 1290(7)
‘Sanjaya said, “O lord of the earth! Having thought in this way, Drona’s son
descended from the seat of his chariot and bowed down in obeisance.
‘“Drona’s son said, ‘I seek refuge with Ugra,
50 Sthanu,
51 Rudra, Sharva,
Ishana, Ishvara, Girisha,
52
the god Varada,
53 Bhava,
54
the undecaying
Bhavana,
55 Shitikantha,
56 Aja,
57 Shakra, Kratha, Kratuhara,
58 Hara,
Vishvarupa,
59 Virupaksha,
60 Bahurupa,
61 Umapati,
62 Shmashanavasina,
63
Dripta, the lord who is Mahaganapati,
64 Khattangadharina,
65 Munda,
66 Jatila
67
and Brahmachari. He is the one who has to be carefully thought of in the mind.
He is the one who those of limited intelligence find extremely difficult to
attain. In the sacrifice, I offer myself as a gift to the destroyer of Tripura.
68 He
is the one who has been praised. He is the one who deserves to be praised. I am
praising the irresistible one, who has hides as his garment. O Vilohita!
69 O
Nilakantha!
70 O Aprikta!
71 O Durnivara!
72 O Shukra!
73 O Vishvasrija!
74 O
brahman! O brahmachari! You are the one who follows vows. You are always
engaged in austerities. You are infinite. You are the objective of austerities. You
have many forms. You are the lord of ganas. You are three-eyed. You are the
one who loves your attendants. You are the one towards whom the lord of the
ganas always looks.
75 You are the lord of Gouri’s heart.
76 You are the father of
Kumara. You are tawny. You have a bull as your mount. Your body is like your
garment. You are extremely fierce. You are eager to adorn Uma. You are
greater than everything. You are supreme. There is nothing that is greater than
you. You are the lord of all arrows and weapons. You are the southern horizon.
You are clad in golden armour. You are the god who is adorned with the moon
on his head. O god! I meditate supremely on you. I am facing this great
calamity now, one that is extremely difficult to counter. You are the purest of
the pure. I am offering all the elements in my body as a gift to you in this
sacrifice.’

~ Mahabharata, Sauptika parva, ch 7