I was the only son of my mother, who was not only a simple woman but a maidservant as well. Since I was her only offspring, she had no other alternative for protection: she bound me with the tie of affection.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
एकात्मजा मे जननी योषिन्मूढा च किङ्करी । मय्यात्मजेऽनन्यगतौ चक्रे स्नेहानुबन्धनम्
ekātmajā me jananī yoṣinmūḍhā ca kiṅkarī | mayyātmaje'nanyagatau cakre snehānubandhanam
SB 1.6.6