Hassidout sur Le Lévitique 7:1

וְזֹ֥את תּוֹרַ֖ת הָאָשָׁ֑ם קֹ֥דֶשׁ קָֽדָשִׁ֖ים הֽוּא׃

"Voici maintenant la règle de l’offrande délictive: C’est une sainteté de premier ordre.

Sefer HaMiddot

1. One whose wife has died should recite daily the Torah passage describing the Guilt Offering (Usham), until he marries a different woman (t.n. This can be found in the Book of Vayikra, Chapters 5 and 7).