It is popularly known as the Śrī Sūktam. It finds it’s mention in all the Gṛhya Sūktam and even in the Ṛg Prātiśākya. The very Sūktam itself concludes that it has 15 verses. These verses are very beautiful to listen and is used to worship all forms of Dévī.
यः शुचिः॒ प्रय॑तो भू॒त्वा जु॒हुया᳚दाज्य॒ मन्व॑हम् । श्रियः॑ प॒ञ्चद॑शर्चं॒ च श्री॒कामः॑ सत॒तं ज॑पेत् ॥ १६॥
Those who after Becoming Bodily Clean and Devotionally Disposed perform Sacrificial Offering with Butter Day after Day, by Constantly Reciting the Fifteen Verses of Śrī Sūktam will have their Longing for Śrī Fulfilled by the Grace of Dévī Lakṣmī.
~ Śrī Ṛg Véda Saṃhitā, Khila Kāṇḍa, Śrī Sūktam.
It is one of the famous hymns from the Ṛg Véda and has gained a lot of popularity throughout the Purāṇas and also in Bhārata.
ŌṂ NAMŌ BHAGAVATÉ RUDRĀYA