What is Ushperin-from wikipedia.org
Ushperin is a haircutting ceremony observed by a wide cross-section of Jews and is particularly popular in Haredi Jewish communities. It is typically held when a boy turns three years old. Among those who practice the upsherin, the male infant does not have his hair cut until this ceremony.
(23) And when you shall come into the land, and plant all manner of trees for food, then you shall count the fruit there as forbidden; three years shall it be as forbidden unto you; it shall not be eaten.
(יט)...כִּ֤י הָֽאָדָם֙ עֵ֣ץ הַשָּׂדֶ֔ה...
(19) ...A person is like the tree of a field...
(כב)...כִּֽי־כִימֵ֤י הָעֵץ֙ יְמֵ֣י עַמִּ֔י...
(22) For as the days of a tree shall be the days of My people,
פרקי אבות ג:כ"ב
כל-שחכמתו מרבה ממעשיות למה הוא דומה? לאילן שענפיו מרבין ושרשיו מעטין, והרוח באה ועוקרתו והופכתו על פניו, שנאמר--והיה כערער בערבה ולא יראה כי יבא טוב, ושכן חררים במדבר, ארץ מלחה ולא תשב.
אבל כל-שמעשיו מרבין מחכמתו, למה הוא דומה? לאילן שענפיו מעטין ושרשיו מרבין שאפילו כל-הרוחותשבעולם באות ונושבות בו, אין מזיזות אותו ממקומות שנאמר--"והיה כעץ שתול על מים, ועל יובל ישלח שרשיו ולא יראה כי יבא חם, והיה עלהו רענן, ובשנת בצרת לא ידאג, ולא ימיש מעשות פרי.
Pirkei Avot 3:22
When a person's wisdom exceeds his good deeds, to what may be be compared? To a tree with many branches but few roots. A wind blows, uproots it and topples it over, as it is written, "He shall be like a desert scrub that never but dwells unwatered in the wilderness, in a salty, solitary, land (Jeremiah 17:6).
However, when a person's good deeds exceed his wisdom, to what may he be compared? To a tree with few branches but with many roots. All the winds of the world may blow against it, yet they cannot move it from its place, as it is written, "He shall be like a tree planted by the waters that spreads its roots by the stream. Untouched by the scorching heat, its foliage remains luxurious. It will have no concern in a year of drought and will not cease from bearing fruit" (Jeremiah 17:8).