The sage was standing on one leg, but as soon as he saw that the three deities had appeared before him, he was so pleased to see them all together that despite great difficulty he approached them on one leg.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तत्प्रादुर्भावसंयोगविद्योतितमना मुनिः । उत्तिष्ठन्नेकपादेन ददर्श विबुधर्षभान्
tatprādurbhāvasaṃyogavidyotitamanā muniḥ | uttiṣṭhannekapādena dadarśa vibudharṣabhān
SB 4.1.23