Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 14

Sanskrit:

क्‍वचित् क्रीडापरिश्रान्तं गोपोत्सङ्गोपबर्हणम् ।स्वयं विश्रमयत्यार्यं पादसंवाहनादिभि: ॥ १४ ॥

ITRANS:

kvacit krīḍā-pariśrāntaṁgopotsaṅgopabarhaṇamsvayaṁ viśramayaty āryaṁpāda-saṁvāhanādibhiḥ

Translation:

When His elder brother, fatigued from playing, would lie down with His head upon the lap of a cowherd boy, Lord Kṛṣṇa would help Him relax by personally massaging His feet and offering other services.

Purport:

The word pāda-saṁvāhanādibhiḥ indicates that Lord Kṛṣṇa would massage Balarāma’s feet, fan Him and bring Him river water to drink.