see ‘agre dekaleh’ on passuk ‘surei istacha, al tikra shema surei ala sarah’. also meforshay hatorah why yosef hatzadik did not include in ‘vechataNU lashem, but said vachaTUSI’ lashem.
Since you’re bringing it into the conversation and I don’t have access to a “agre dekaleh,” why don’t you tell us what the seforim say?
The Wolf