כַּבֵּ֥ד אֶת־אָבִ֖יךָ וְאֶת־אִמֶּ֑ךָ לְמַ֙עַן֙ יַאֲרִכ֣וּן יָמֶ֔יךָ עַ֚ל הָאֲדָמָ֔ה אֲשֶׁר־יְהוָ֥ה אֱלֹהֶ֖יךָ נֹתֵ֥ן לָֽךְ׃ (ס)
Honor your father and your mother, that you may long endure on the land that the LORD your God is assigning to you.
ויקרא יט:ג
אִישׁ אִמּוֹ וְאָבִיו תִּירָאוּ וְאֶת שַׁבְּתֹתַי תִּשְׁמֹרוּ אֲנִי ד' אֱ-לֹהֵיכֶם
Leviticus 19:3
A man shall be in awe of his mother and his father, and keep My sabbaths; I am Hashem your God.
ת"ר איזהו מורא ואיזהו כיבוד מורא לא עומד במקומו ולא יושב במקומו ולא סותר את דבריו ולא מכריעו כיבוד מאכיל ומשקה מלביש ומכסה מכניס ומוציא
The Sages taught: What is fear and what is honor? Fear of one’s father includes the following: One may not stand in his father’s fixed place, and may not sit in his place, and may not contradict his statements by expressing an opinion contrary to that of his father, and he may not choose sides when his father argues with someone else. What is considered honor? He gives his father food and drink, dresses and covers him, and brings him in and takes him out for all his household needs.
תני אבימי בריה דרבי אבהו יש מאכיל לאביו פסיוני וטורדו מן העולם ויש מטחינו בריחים ומביאו לחיי העולם הבא
Avimi, son of Rabbi Abbahu, taught: There is a type of son who feeds his father pheasant [pasyonei] and yet this behavior causes him to be removed from the World, i.e., the World-to-Come; and there is one who makes him grind with a millstone, which is difficult work, and this action brings him to the life of the World-to-Come.
כי אתא רב דימי אמר פעם אחת היה לבוש סירקון של זהב והיה יושב בין גדולי רומי ובאתה אמו וקרעתו ממנו וטפחה לו על ראשו וירקה לו בפניו ולא הכלימה
When Rav Dimi came from Eretz Yisrael to Babylonia, he said: Once Dama ben Netina was wearing a fine cloak [sirkon] of gold, and was sitting among the nobles of Rome. And his mother came to him and tore his garment from him and smacked him on the head and spat in his face, and yet he did not embarrass her.
רבי טרפון הוה ליה ההיא אמא דכל אימת דהות בעיא למיסק לפוריא גחין וסליק לה וכל אימת דהות נחית נחתת עלויה אתא וקא משתבח בי מדרשא אמרי ליה עדיין לא הגעת לחצי כיבוד כלום זרקה ארנקי בפניך לים ולא הכלמתה
The Gemara relates: Rabbi Tarfon had a certain manner of treating his mother, that whenever she wished to ascend into her bed he would bend over and help her to ascend, and whenever she wished to descend from the bed, she would descend onto him. He came and praised himself in the study hall for performing the mitzva of honoring one’s father and mother so thoroughly. They said to him: You still have not reached even half of the honor due to her. Has it ever happened that she threw a purse into the sea in front of you, and you did not embarrass her?
רב אסי הוה ליה ההיא אמא זקינה אמרה לי' בעינא תכשיטין עבד לה בעינא גברא נייעין לך בעינא גברא דשפיר כותך שבקה ואזל לארעא דישראל
Rav Asi had an elderly mother. She said to him: I want jewelry, and he made jewelry for her. She said to him: I want a man whom I can marry, and he said to her: I will seek one for you. She said to him: I want a husband who is as handsome as you. At this point, he realized that she was senile, and that he would be unable to fulfill all her requests. Therefore, he left her and went to Eretz Yisrael.
מִי שֶׁנִּטְרְפָה דַּעְתּוֹ שֶׁל אָבִיו אוֹ שֶׁל אִמּוֹ מִשְׁתַּדֵּל לִנְהֹג עִמָּהֶם כְּפִי דַּעְתָּם עַד שֶׁיְּרֻחַם עֲלֵיהֶן. וְאִם אִי אֶפְשָׁר לוֹ לַעֲמֹד מִפְּנֵי שֶׁנִּשְׁתַּטּוּ בְּיוֹתֵר יְנִיחֵם וְיֵלֵךְ לוֹ וִיצַוֶּה אֲחֵרִים לְהַנְהִיגָם כָּרָאוּי לָהֶם:
If one's father or mother has become mentally disordered, he should make an effort to behave toward them according to their state of mind until they will be shown mercy [and get cured]. But if he is unable to endure the strain any longer, because they have become utterly insane, he may leave them and go elsewhere, charging others to take proper care of them.
מי שנטרפה דעתו של אביו וכו' יניחם וילך לו ויצוה אחרים להנהיגם כראוי. א''א אין זו הוראה נכונה אם הוא ילך ויניח לו למי יצוה לשמרו, עכ''ל:
This is not a correct ruling! If he goes and leaves him, who shall he command to watch him?!