The proofs that proved the prophecy of Moses and Jesus are the same proofs that proved the prophecy of prophet Mohamed but some are pride and arrogant to confess that. No one of us saw Gabriel when came to Moses or to Jesus and some want me to prove it to them.
All the prophets have their miracles that proved their prophecy to their nations and have the same holy book that revealed from God but some deny some of them and prove some of them according to their pride and arrogance and ego like Satan did when God ordered him to bow to Adam.
(86) And indeed, We gave Mûsa (Moses) the Book and followed him up with a succession of Messengers. And We gave 'Isa (Jesus), the son of Maryam (Mary), clear signs and supported him with Rûh-ul-Qudus, the holy spirit, [Jibrael (Gabriel) A.S.]. Is it that whenever there came to you a Messenger with what you yourselves desired not, you grew arrogant? Some you disbelieved and some you killed. (87) (Surah 2)
(252) Those Messengers! We preferred some often to others; to some of them Allâh spoke (directly); others He raised to degrees (of honour); and to '?s? (Jesus), the son of Maryam (Mary), We gave clear proofs and evidences, and supported him with Rûh-ul-Qudus, the holy spirit [Jibrael (Gabriel)]. If Allâh had willed, succeeding generations would not have fought against each other, after clear Verses of Allâh had come to them, but they differed - some of them believed and others disbelieved. If Allâh had willed, they would not have fought against one another, but Allâh does what He likes. (253) (Surah 2)
(101) Say (O Muhammad SAW) Ruh-ul-Qudus, the holy spirit [Jibril (Gabriel)] has brought it (the Qur'an) down from your Lord with truth, that it may make firm and strengthen (the Faith of) those who believe and as a guidance and glad tidings to those who have submitted (to Allâh as Muslims). (102) And indeed We know that they (polytheists and pagans) say: "It is only a human being who teaches him (Muhammad SAW)." The tongue of the man they refer to is foreign, while this (the Qur'ân) is a clear Arabic tongue. (103) Verily! Those who believe not in the Ayât (proofs, evidences, verses, lessons, signs, revelations, etc.) of Allâh, Allâh will not guide them and theirs will be a painful torment (104) (Surah 16)