भगवतोऽन्यत्र पृथङ्न कदाचिदपि या भवति सा त्वनन्या भक्तिः । सर्वैरपि करणैः वासुदेवादन्यन्न उपलभ्यते यया, सानन्या भक्तिः … ।
bhagavato’nyatra pṛthaṅ na kadācid api yā bhavati sā tv ananyā bhaktiḥ | sarvair api karaṇaiḥ vāsudevād anyan na upalabhyate yayā, sānanyā bhaktiḥ … |
(Śaṅkarācārya’s bhāṣya on Śrīmad Bhagavad-gītā: 11.54)
“That which never manifests separately apart from Bhagavān is ananyā-bhakti [i.e., bhakti which has no other object]. That by which nothing other than Vāsudeva is perceived with all the senses is ananyā-bhakti.”