וַיַּגֶּד־לָ֣הּ אֶת־כָּל־לִבּ֗וֹ וַיֹּ֤אמֶר לָהּ֙ מוֹרָה֙ לֹֽא־עָלָ֣ה עַל־רֹאשִׁ֔י כִּֽי־נְזִ֧יר אֱלֹהִ֛ים אֲנִ֖י מִבֶּ֣טֶן אִמִּ֑י אִם־גֻּלַּ֙חְתִּי֙ וְסָ֣ר מִמֶּ֣נִּי כֹחִ֔י וְחָלִ֥יתִי וְהָיִ֖יתִי כְּכָל־הָאָדָֽם׃
參孫就把心裡的一切都告訴了她，對她說：「從來沒有剃刀剃過我的頭，因為我一出母腹就歸上帝作拿細耳人。我若被剃了頭，力氣就會離開我，我就會軟弱無力，像所有平常人一樣。」
Sotah
דלילה saw that he had told all [that was in] his heart. How did she know? ר חנין said in the name of רב. True words are recognizable. אביי said, She knows about the righteous one that he would not utter the name of heaven in vain. As soon as he said "I am a nazir to G-d." Now she knew he was telling the truth.
Berakhot
Who dreams of shaving should on rising say, "And [Joseph] shaved himself and changed his raiment" (Gen. xli. 14), before another verse occurs to him, viz. : "If I be shaven, then my strength will go from me" (Judges xvi. 17). Who dreams of a well should on rising say, "A well of living waters" (Cant. iv. 15), before another verse occurs to him, viz. : "As a cistern welleth with her waters, so she welleth with her wickedness" (Jer. vi. 7). Who dreams of a reed should on rising say, "A bruised reed shall he not break" (Is. xlii. 3), before another verse occurs to him, viz. : "Behold, thou trustest upon the staff of this bruised reed" (ibid, xxxvi. 6).