[ALLAH’S Quran – 57:19] “And those who believe in Allah and His messengers- they are the Sincere (lovers of Truth), and the witnesses (who testify), in the eyes of their Lord: They shall have their Reward and their Light. But those who reject Allah and deny Our Signs,- they are the Companions of Hell-Fire.”
The Prophet (Peace Be Upon Him) has said:
[Muslim, Book #001, Hadith #0043] “It is narrated on the authority of Ubadah b. Samit that the Messenger of Allah (may peace be upon him) observed: He who said:” There is no god but Allah, He is One and There is no associate with Him, that Muhammad is his servant and His Messenger, that Christ is servant and the son of His slave-girl and he (Christ) His word which He communicated to Mary and is His Spirit, that Paradise is a fact and Hell is a fact,”Allah would make him (he who affirms these truths enter Paradise through any one of its eight doors which he would like.”
[Muslim, Book #001, Hadith #0045] “It is narrated on the authority of Sunabihi……………. I heard the Messenger of Allah (may peace be upon him) say: He who testifies that there is no god but Allah and that Muhammad is the messenger of Allah, Allah would prohibit the fire of hell for him.”
[Muslim, Book #001, Hadith #0051] “It is reported on the authority of Anas b. Malik that the Prophet of Allah (may peace and blessings be upon him) addressed Mu’adh b. Jabal as he was riding behind him to which he replied: At thy beck and call, and at thy pleasure, Messenger of Allah. He again called out: Mu’adh, to which he (again) replied: At thy beck and call, and at thy pleasure. He (the Holy Prophet) addressed him (again): Mu’adh, to which he replied: At thy beck and call, and at thy pleasure, Messenger of Allah. Upon this, he (the Holy Prophet) observed: If anyone testifies (sincerely from his heart) that There is no god but Allah, and that Muhammad is His bondsman and His Messenger, Allah immuned him from Hell.”