Inni comprises the emphatic particle inna and its first-person pronominal noun. Uridu is an imperfect verb with implicit subject 'I'; Hajj and Umrah are its two coordinated objects.
Fa-yassirhuma is a supplicatory imperative. The dual suffix -huma refers to both rites, as it also does in wa-taqabbalhuma. This is why both must appear in the translation.