法華義疏 1.226

1.226

「舍利弗」者，具足應云舍利弗羅，舍利言身，弗羅言子，略於羅字但言弗也。名舍利弗有二因緣：一、從過去誓願立名。釋迦過去作瓦師，值釋迦佛發願，願未來作佛名釋迦，弟子名舍利弗，故從本願立名也。二者、從母立名。以母眼似舍利鳥眼，故名母為舍利，其母於眾女人中聰明第一，以世人貴重其母故呼為舍利子，此世人為作名也。古經名鶖鷺子，鶖鷺子猶取鳥名也。或言舍利鳥似於鶖鷺也。父名提舍，逐父為名故名優婆提舍，優婆者逐也。提舍者星名也。又經云「佛初見二人來，令改提舍之名，可復本字為舍利弗，以過去本願名舍利弗，故令改今世之名」也。目連亦爾。

Regarding "Śāriputra": in full, it should be Śāriputra; *śāri* means body (śarīra), and *putra* means son, with the character *ra* omitted so that only *putra* is stated. There are two causes and conditions for being named Śāriputra: First, establishing the name from a past vow. When Śākyamuni was a potter in the past, he encountered Śākyamuni Buddha and made a vow, wishing to become a Buddha in the future named Śākyamuni, with a disciple named Śāriputra; hence the name was established from the original vow. Second, establishing the name from his mother. Because his mother's eyes resembled the eyes of a *śāri* bird, his mother was named Śāri. His mother was foremost in intelligence among women, and because worldly people esteemed his mother, they called him Śāriputra (son of Śāri); this was a name made for him by worldly people. Old sūtras named him "Son of the Egret," which still takes the bird's name. Or it is said that the *śāri* bird resembles an egret. His father was named Tiṣya; adopting his name from his father, he was therefore named Upatisya; *upa* means "following," and *tiṣya* is the name of a constellation. Furthermore, a sūtra states: "When the Buddha first saw the two persons coming, he had him change the name Tiṣya, allowing him to return to his original designation as Śāriputra; because in his past original vow he was named Śāriputra, he had him change his present-life name." Maudgalyāyana was also like this.