Yes . Vishnu is called self born by Sayana’s interpretion of Rigveda 1.156.2
- यः पूर्व्याय वेधसे नवीयसे सुमज्जानये विष्णवे ददाशति । यो जातमस्य महतो महि ब्रवत्सेदु श्रवोभिर्युज्यं चिदभ्यसत् ॥
- “He who offers worship to Viṣṇu, the ancient, the creator, the ever-renewed, the self-born; whoever proclaims the glorious birth of this Great One—he indeed surpasses even his equal in renown.”
Sayana interpets सुमज्जानये as self born .सुमज्जानये — स्वयमेवोत्पन्नाय
“To the One who has originated by Himself.”
This translation follows Sāyaṇa's first interpretation, citing Yāska's Nirukta 6.22
सुमज्जानये स्वयमेवोत्पन्नाय।
“To the one who has originated by himself.”
Full translation and explanation by Sayana
सुमज्जानये स्वयमेवोत्पन्नाय ॥ जनेरौणादिक इण् ॥ ‘ सुमत्स्वयमित्यर्थः' (निरु. ६. २२) इति यास्कः । यद्वा । सुतरां मादयतीति सुमत्। तादृशी जाया यस्य स तथोक्तः । तस्मै सर्वजगन्मादनशीलश्रीपतये इत्यर्थः ॥ बहुव्रीहौ ‘जायाया निङ्' (पा. सू. ५. ४. १३४ ) इति निङादेशः समासान्तः । वलि लोपः ॥ उक्तगुणकाय
- “For sumajjānaye: to the one who has arisen by himself (svayam evotpannāya). The suffix iṇ is prescribed according to the Uṇādi grammatical tradition for the root jan, ‘to be born.’ Yāska says (Nirukta 6.22): ‘sumat means “by himself” (svayam).’”
- The decisive expression is:
- स्वयमेवोत्पन्नाय — svayam evotpannāya
- svayam — by himself; independently.
- eva — indeed, precisely.
- utpannāya — to the one who has arisen, originated, or been born.
- Thus, Sāyaṇa explicitly interprets the expression as “to the one who originated by himself” or “to the self-born one.”
As per Mahabharata, Narayana manifests himself as Vishnu from Aniruddha vyuha and sometime from Sankarshana vyuha
- प्रद्युम्नात् चानिरुद्धं त्वं यं विदुर्विष्णुमव्ययम् ।
- अनिरुद्धोऽसृजन्मां वै ब्रह्माणं लोकधारिणम् ॥
- Translation:
- "From Pradyumna came Aniruddha, whom they know as the imperishable Viṣṇu. Aniruddha indeed created me, Brahmā, the sustainer of the worlds."