How can the sentence "I left for them Allah and His Messenger," spoken by Abu Bakr Al-Siddiq (may Allah be pleased with him), be parsed?

The website is dedicated to jurisprudential fatwas and da'wah matters, so it should be utilized for that purpose. Grammatical analysis of the sentence "تركت لهم الله ورسوله" (I left Allah and His Messenger for them):

"تركت" (I left): A past tense verb built upon sukoon due to its connection with the pronoun of the doer. The "taa'" is a connected nominative pronoun in the place of a nominative doer. "لهم" (for them): The "lam" is a preposiition. The "haa'" is a pronoun in the place of a genitive case due to the preposition. The "meem" is a sign of plurality. The preposition and its genitive object are related to the verb "تركت". "الله" (Allah): The exalted word is the direct object of the verb "ترك" (left), in the accusative case with the apparent fatha at its end. In reality, it is a genitive annex where the annexer has been omitted and the annexed has taken its place. "ورسوله" (and His Messenger): The "waw" is a conjunction. "رسول" (Messenger) is conjoined to the exalted word "الله" and is in the accusative case like it. It is an annex, and the "haa'" is an annex in the place of a genitive case due to annexation.