佛說處處經 1.32

1.32

「舍利弗知一切法語，用時語、護語、守語，佛便謂舍利弗：『去非時語用，不可寄人故。』舍利弗本字優波替。

"Śāriputra knows all expressions of the Dharma; he speaks in accordance with the proper time, protects his words, and guards his speech. The Buddha then said to Śāriputra: 'Discard untimely speech; because [it cannot be relied upon], it cannot be entrusted to others.' Śāriputra's original name was Upatiṣya."