What is the definition of "Merkav"?
Rashi: "Merkav" is (not the saddle on which he sits [or the saddle-strap] 1 but) the vertical projecting part of the saddle (which the rider holds on to for support). 2
Targum Yonasan: It incorporates the vertical section of the saddle and the strap with which the rider straps himself when riding. 3
What are the implications of "ve'Chol ha'Merkav asher Yirkav alav ? ". Why does the Torah insert the (otherwise superfluous) word "ha'Merkav"?
Sifra: To teach us that 'Merkav' is confined to an animal, and does not apply if one 'rides' on a chair or on a bed.
What is the difference between Tum'as Mishkav and Moshav and Tum'as Merkav>
Oznayim la'Torah: The former require Kibus Begadim, the latter does not.
Why does the Torah insert the (otherwise superfluous) word "ve'Chol ha'Merkav asher Yishkav alav"?
Sifra: To teach us that the Din of Tum'as Merkav is confined to the (wooden) projection of the saddle and not to Mishkav and Moshav.
