Uppalavanna (Pali: Uppalavaṇṇā; Sanskrit: Utpalavarṇā) was a Buddhist bhikkhuni (Pali; Sanskrit: Bhikshuni), or nun, who was considered one of the top female disciples of the Buddha. She is considered the second of the Buddha's two chief female disciples, along with Khema. She was given the name Uppalavanna, meaning "color of a blue water lily", at birth due to the bluish color of her skin. According to the Theravada tradition, Uppalavanna was born the daughter of a wealthy merchant. Due to her beauty, numerous wealthy and powerful suitors came to her father to ask for her hand in marriage. Instead of marrying, she entered the monastic life under the Buddha as a bhikkhuni. According to the Mulasarvastivada tradition, Uppalavanna had a tumultuous life as a wife and courtesan before converting to Buddhism and becoming a bhikkhuni. Uppalavanna attained enlightenment while using a fire kasina as her object of meditation less than two weeks after her ordination. Following her enlightenment she developed a mastery of iddhipada, or spiritual powers, leading the Buddha to declare her his female disciple foremost in psychic powers. Her male counterpart was Maha Moggallana. The earliest known record of Uppalavanna comes from a 3rd century BCE stone engraving, portraying her at the Buddha's descent to Sankassa after he visited his mother in Tavatimsa Heaven as described in Buddhist legend. Uppalavanna is mentioned in several early Buddhist texts of the Pali Canon, including the Saṃyutta Nikāya, Aṅguttara Nikāya, and the Therīgāthā and Apadāna collections within the Khuddaka Nikaya as well as some early Mahayana texts such as the Perfection of Wisdom in Eighty-thousand Lines and Treatise on the Great Perfection of Wisdom. Buddhist scholar Bhikkhu Bodhi notes that, despite being considered one of the Buddha's chief disciples, details about Uppalavanna's life in the Buddhist texts and commentaries are quite scant. Bhikkhu Bodhi points out that there is more in Buddhist texts about one of her previous lives than about the bhikkhuni herself.