Mention of Śrīmatī Rādhārāṇī in scriptures

Padma Purāņa 5.69.117-110:त्प्रिया प्रकृतिस्त्वाद्या राधिका कृष्णवल्लभा । तत्कलाकोटिकोट्यंशा दुर्गाद्यास्त्रिगुणात्मिकाः।

The ādi prakṛtī is Śrī Rādhikā, beloved of Krsna. Durgā and the other goddesses in the world of the three modes are a million-millionth part of one of Her expansions.

अर्थर्वेद (पिप्पलाद शाखा, पुरुष बोधिनि श्रुति।)रा:धिका यस्यांशो लक्श्मिदुर्गादि शक्तिर।

Lakshmi Durga and other powers are parts of Shrīmatī Rādhīka.

Padma Purana, 5.81.52-55:गोपनादुच्यते गोपी राधिका कृष्णवल्लभा । देवी कृष्णमयी प्रोक्ता राधिका परदेवता । सर्वलक्ष्मीस्वरूपा सा कृष्णाह्लादस्वरूपिणी। ततः सा प्रोच्यते विप्र ह्लादिनीति मनीषिभिः । तत्कलाकोटिकोट्यंश दुर्गाद्यास्त्रिगुणात्मिकाः । सा तु साक्षान्महालक्ष्मीः कृष्णो नारायणः प्रभुः। नैतयोर्विद्यते भेदः स्वल्पोऽपि मुनिसत्तम ।

"The goddess, dear to Kṛṣņa, and the highest deity is called Rādhika. She is the original form of all the lakṣmīs and is the form of Krsna's pleasure potency. Therefore, O brāhmaņa, she is called Hladini by the wise. Durga and others are a part of the croreth portion of Radha. She is actually Mahalakṣmi, and Kṛṣņa is lord Nārāyaņa. O best sage, there is not the slightest diffence between the two.

Sanat-kumāra samhitā [298]:tasyādyā prakṛtī rādhikā nityā nirguņā sarvālań kāra-śobhitāprasannāśeṣa-lāvaṇya-sundarī

Śrī Rādhikā is ādi prakṛtī (śakti). She is eternal and devoid of any material quality. She is adorned with all ornaments, joyful, and more beautiful than all Beauty.

Sanata- kumāra samhitā [72-73], Padma Purāņa 5.81.52-53.:...देवी कृष्णमयी प्रोक्ता राधिका परदेवता ॥ ५२ सर्वलक्ष्मीस्वरूपा सा कृष्णाह्लादस्वरूपिणी । ततः सा प्रोच्यते विप्र ह्लादिनीति मनीषिभिः ॥

Śrī Rādhikā is the Supreme Goddess, the Parā prakṛtī. She is the complete embodiment of all the Lakṣmīs. She is the personification of the joy of Lord Krsna (raso vai sah.) Thus, wise describe Her as Hlādinī-śakti (pleasure-giving potency)

Nārada Purāņa 1.82.190:sarasvatīśā durgeśā

Śrī Rādhikā is the controller of Sarasvatī. Śrī Rādhikā is the controller of Durgā.

Puruşa-bodhini Upaniṣad, Prathamaḥ prapāthakaḥ, Atharva Veda:rādhikā ceti yasyā aṁśo lakṣmī-durgādikā śaktir

Śrī Rādhikā's expansions (aṁśas) are personified energie such as Lakṣmī and Durgā.

Nārada Purāņa 1.82.151:..durgārādhyā ramārādhyā....

Śrī Rādhikā is worshipped by Durgā. Śrī Rādhikā is worshipped by Ramā (Lakṣmī).

स्कंद पुराण [वैष्णव खंड, भागवत माहात्म्य 2.6, 2.9-14]:... रुक्मिण्यादिसमावेशो मयात्रैव विलोकितः....

The queens of Dwārkā (Rukmini etc.) are very keen to serve Rādhā and Krishna. All the heroines of Shri Krishna are actually extensions of Rādhikā ji.

Srimati Rādhārāṇī has no comparison

Padma Purāņa, Patāla Khanda 71.38-42:[Nārada speaks] I have freely wandered through all the worlds, but a form like of Śrī Rādhikā, I have never seen anywhere! I have not seen a girl who is even one millionth as beautiful as this girl, either in Brahmaloka, Rudraloka or Indraloka! I have seen Mahāmāyā, the daughter of the mountain (Pārvatī), whose form enchants all moving and non-moving creatures. I have seen Lakṣmī, Sarasvatī, Kānti, Vidyā and all the best of women, but they could not even touch the shadow of Her sweet form! I've never seen such a tender and beautiful girl anywhere!-

Just as Shri Krishna is the father of all, similarly Radhaji is the mother of all. Because there is no difference between Radha and Krishna.

Srimad Bhagvad Gita 9.17 Krishna say: पिताहमस्य जगतो माता धाता पितामहः Bg. 14.4 अहम् बीजप्रदः पिता

Narada pancharatra वृहद् ब्रह्म संहिता (4.25) States: यः कृष्णः सापि राधा च या राधा कृष्ण एव सः ।...

That transcendental form who is Krishna is certainly Radha. That who is Radha is certainly Krishna. Both are one and the same.

Caitanya Caritamrita. Adi 4.89

Shri Radha is parama-devata, the Supreme Goddess, and She is worshipable for everyone. She is the protectress of all, and She is the mother of the entire universe.

In Brahmavaivarta:(ब्रह्मवैवर्त पुराण, प्रकृतिखण्ड, अध्याय ४८, श्लोक ३८):राधा भजति तं कृष्णं स च ताज्य परस्परम् । उभयोः सर्वसाम्यं च सदा सन्तो वदन्ति च ॥

Radha worships Shri Krishna and Krishna praises Shriradha. There is always harmony between them

Shiv puran 2.5.29.53:तस्य नारी समाख्याता राधेति जगदम्बिका। प्रकृतेः परमा मूर्तिः पंचमी सुविहारिणी ॥ ५३ बहुगोपाश्च गोप्यश्च तत्र संति तदंगजाः। सुविहारपरा नित्यं राधाकृष्णानुवर्तिनः ॥ ५४ ॥

His(Krishna)wife Rādhā is the mother of the universe. Her form is greater than Prakṛti. It is the fifth sportive form. Many cowherds and cowherdesses born of her live there. They are sportively inclined and follow Rādhā and Kṛṣṇa.

(गर्गसंहिता, मथुराखण्ड, अध्याय १८. श्लोक १७-२२):कथं लिखसि राधे त्वं कथं दुःखं करोषि हि । सर्वा तस्मै वदिष्यामि व्यथां त्वल्लेखनं विना ॥

Hey Radhee! Why do you need to write anything Why do you even grieve? I will go and tell all the words of your heart to Shri Krishna.

Brahmand Purana (ब्रह्माण्डपुराण, मध्यभाग, अध्याय ४३, श्लोक ०८):या राधा जगदुद्भवस्थितिलयेष्वाराध्यते वा जनै, शब्दं बोधयतीशवक्त्रविगलत्प्रेमामृतास्वाद नम् ।

At the time of the origin, condition and destruction of the world, who is worshipped by the name 'Radha', she is the owner of Ras, the master of rasikas, and Radha, who guides everyone, always protect me.

Skanda Purana/Volume 2/ Bhagavatam

Like the moon, the mind of Śrīkṛṣņa, accompanied by the refulgence from the face of Shri Radha, always shines beautifying the Vrindavan Forest by its rays.

Matsya Purāņa: 13.37:रुक्मिणी द्वारवत्यान्तु राधा वृन्दावने वने ॥

As Rukminī is the chief queen in Dvārakā, Rādhā is the chief gopī in Vrndāvana.

Ādi Purāņa:This verse, spoken by Lord Krsna to Arjuna, is cited from the Adi Purāņa.

O Pārtha, in all the three planetary systems, this earth is especially fortunate, for on earth is the town of Vrndāvana. And there the gopīs are especially glorious because among them is My Śrīmatī Rādhārānī."

Srila Jiva Goswami quotes the following verses from the Agni Purana:....tatraikam radhikam vina radha tad-bhava-samlina....

At dawn the Gopis inquired from Krishna's servant, Uddhava, about the Lord's pastimes and recreation. Only Srimati Radharani, immersed in thought of Krishna, withdrew Her interest in the talks. Then Radha, who is worshiped by the residents of Her Vrindavan village, spoke up in the midst of her girl friends(Sakhis). Her words were full of pure transcendental knowledge and expressed the ultimate portion of the Vedas."

Radhatapani Upanishad of Adharvana Veda:येयं राधा यश्च कृष्णो रसाब्धिर्देहश्चैकः क्रीडनार्थे द्विधाभूत The oceans of Radha and Krishna are the same, but there are two forms for the game.

Brahma Vaivartha PuranaVolume 4 [Sri Krishna Janma Khanda]/Chapter 97 / Verse 49/50

Those sinful beings who mock and condemn those who hate Sri Radhikaji, the life-giver of Krishna, undoubtedly feel the sin of hundreds of celibates for which they suffer for a long time in the hell of Kumbhipaka and Raurav.

Śrī Śrī Rādhā Mādhava Ki Jaya!! 

May Rādhā-Kṛṣṇa,Gūrū,Gauranga Bless us and we all proceed to Goloka In this very Lifetime,Hare Kṛṣṇa!