Reference for Taanit 46:12

ותו רבי מני הוה שכיח קמיה דרבי יצחק בן אלישיב אמר ליה עתירי דבי חמי קא מצערו לי אמר ליענו ואיענו אמר קא דחקו לי אמר ליעתרו ואיעתרו

He replied: Now that rain has come the world will feel relieved. Again his son, R'Mani, was annoyed by the members of the household of the Patriarch, he went and prostrated himself on the grave of his father and exclaimed: Father, father, these people persecute me. Once as they were passing [the grave] the knees of their horses became stiff [and remained so] until they undertook not to persecute him any longer. Again, R'Mani used often to attend [the discourses] of R'Isaac B'Eliashab and he complained: The rich members of the family of my father-in-law are annoying me.

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