Related su Esodo 34:36

Yochanan ben Dahavei says in the name of Rabbi Yehuda, Neither is a blind man [obligated to appear at the Temple on the Festivals], as it says (Ex. 23:17), "[All of your males] shall be seen," this excludes the blind. Rebbi answered the words of Yochanan ben Dahavei: The Sages decided to support the opinion of (סִיעַ) Rabbi Yehuda [in reliance upon] (1 Sam. 1:22), "Hannah did not ascend, because she said to her husband, 'When the child is weaned, [I will bring him, that he may appear before the Lord]." [Just as a minor is not obligated until he can ascend independently, so too a blind person, who requires support to ascend the Temple, is not obligated to appear (see Chag. 6a:3).]

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The second, precepts received on the authority of Revelation which reason neither obligates nor rejects such as the prohibition of milk with meat, shaatnez (garments woven of wool and flax), kilaim (sowing diverse seeds together), and similar precepts whose reason for being prohibited or obligatory is unknown to us.