arabic
Forbidden to you (for food) are: Al-Maytatah (the dead animals - cattle-beast not slaughtered), blood, the flesh of swine, and the meat of that which has been slaughtered as a sacrifice for others than Allâh, or has been slaughtered for idols, etc., or on which Allâh's Name has not been mentioned while slaughtering, and that which has been killed by strangling, or by a violent blow, or by a headlong fall, or by the goring of horns - and that which has been (partly) eaten by a wild animal - unless you are able to slaughter it (before its death) ­ and that which is sacrificed (slaughtered) on An­Nusub[] (stone altars). (Forbidden) also is to use arrows seeking luck or decision, (all) that is Fisqun (disobedience of Allâh and sin). This day, those who disbelieved have given up all hope of your religion, so fear them not, but fear Me. 
This day, I have perfected your religion for you, completed My Favour upon you, and have chosen for you Islâm as your religion. But as for him who is forced by severe hunger, with no inclination to sin (such can eat these above-mentioned meats), then surely, Allâh is Oft­Forgiving, Most Merciful. (5:3)

Anyone who claims to be a Muslim, if he or she not maintaining the knowledge, and practicing there Islam from what is said in the Qur'an and Hadeeth, and listening to only their imams (scholars), blindly, family members, elders and only following their sects only. Every human being can be misguided by Satan, except Allah and his Messenger (Qur'an and the Sunnah), and after that who ever does not do this practice, must apply right away, if he or she wants to die as a Muslim, inshallah. After death, whoever was not on the teachings of the Qur'an and the Sunnah, they will be unable to claim that they are Muslims in the grave or day of resurrection.

We need to follow what is in the Qur'an and in the hadeeth only, because as mentioned in (5:5), that Allah has completed our faith, and there is no need for anything after that at all to follow, if we want to be Muslims, and die as a Muslim.

Say (O Muhammad SAW to mankind): "If you (really) love Allâh then follow me (i.e. accept Islâmic Monotheism, follow the Qur'ân and the Sunnah), Allâh will love you and forgive you of your sins. And Allâh is Oft-Forgiving, Most Merciful."  (3:31)

arabic
Say (O Muhammad SAW): "
Obey Allâh and the Messenger (Muhammad SAW)." But if they turn away, then Allâh does not like the disbelievers[]. (3:32)

As narrated by Abu Hurarirah (R.A) in the hadeeth books (At-Tirmidhi, Ibn Majah, and Abu Dawud) that the Prophet said: "Jews and Christians were divided in to seventy one, and seventy two religious sects. And this nation will be divided in to seventy three religious sects. All in hell except for one, and that one is the one which I and my companions are today." (Following the Qur'an and the Sunnah)

arabic
So if they dispute with you (Muhammad SAW) say: "I have submitted myself to Allâh (in Islâm), and (so have) those who follow me." And say to those who were given the Scripture (Jews and Christians) and to those who are illiterates (Arab pagans): "Do you (also) submit yourselves (to Allâh in Islâm)?" If they do, they are rightly guided; but if they turn away, your duty is only to convey the Message; and Allâh is All-Seer of (His ) slaves[].