15. Whoever goes right, then he goes right only for the benefit of his own self. And whoever goes astray, then he goes astray to his own loss. No one laden with burdens can bear another's burden. And We never punish until We have sent a Messenger (to give warning).

No One will have to bear the Sins of Another

Allah tells us that whoever is guided and follows the truth, walking in the footsteps of the Prophet, he will gain the good consequences of that for himself.

And whoever goes astray, meaning from the truth, deviating from the way of guidance, he is wronging himself and will have to bear the consequences. Then Allah says:

No one laden with burdens can bear another's burden.

no one will have to bear the sins of another, and he does not wrong anyone besides himself, as Allah says:

and if one heavily laden calls another to (bear) his load, nothing of it will be lifted [35:15]

There is no contradiction between this and other Ayat

And verily, they shall bear their own loads, and other loads besides their own. [29:13]
and:

and also of the burdens of those whom they misled without knowledge. [16:25]

For those who called others to do evil will bear the sin of their own deviation as well as the sin of those whom they led astray, without detracting the least amount from the burden of those people, and none of this burden shall be removed from them. This is the justice and mercy of Allah towards His servants. As Allah says:

And We never punish until We have sent a Messenger (to give warning).

No Punishment until a Messenger has been sent

Allah tells us that out of His justice, He does not punish anyone until He has established proof against him by sending a Messenger to him, as He says:

Every time a group is cast therein, its keeper will ask: "Did no warner come to you?" They will say: "Yes, indeed a warner did come to us, but we belied him and said: 'Allah never sent down anything (of revelation); you are only in great error.'" (67:8-9)
And,

And those who disbelieved will be driven to Hell in groups, till, when they reach it, the gates thereof will be opened. And its keepers will say, "Did not the Messengers come to you from yourselves - reciting to you the verses of your Lord, and warning you of the meeting of this Day of yours?" They will say: "Yes," but the Word of torment has been justified against the disbelievers! (39:71)
And,

Therein they will cry: "Our Lord! Bring us out, we shall do righteous good deeds, not (the evil deeds) that we used to do." (Allah will reply:) "Did We not give you lives long enough, so that whosoever would receive admonition could receive it? And the warner came to you. So taste you (the evil of your deeds). For the wrongdoers there is no helper." (35:37)

There are other Ayat which indicate that Allah will not make anyone enter Hell except after sending a Messenger to them.

The Issue of Small Children who die

Here there arises an issue over which the scholars in earlier and modern times have disagreed, may Allah have mercy on them. This is the issue of children who die when they are little, and their parents are disbelievers: what happens to them? By the same token, what happens to the insane, the deaf, the senile and those who die during the circumstances of Fatrah, when no Message reached them? Several Hadiths have been narrated on this topic, which I will quote here by the help and support of Allah.

The First Hadith from Al-Aswad bin Sari'

Imam Ahmad reported from Al-Aswad bin Sari' that the Messenger of Allah said,

"There are four who will present their case on the Day of Resurrection: a deaf man who never heard anything, an insane man, a very old and senile man, and a man who died during the Fatrah. As for the deaf man, he will say, "O Lord, Islam came but I never heard anything." As for the insane man, he will say, "O Lord, Islam came and the young boys were throwing camel dung at me." As for the senile man, he will say, "O Lord, Islam came and I did not understand anything."

As for the one who died during the Fatrah, he will say, "O Lord, no Messenger from You came to me." Allah will accept their pledge of obedience to Him, then He will send word to them that they should enter the Fire. By the One in Whose Hand is the soul of Muhammad, if they enter it, it will be cool and safe for them."

There is a similar report with a chain from Qatadah from Al-Hasan from Abu Rafi' from Abu Hurayrah, but at the end it says:

"Whoever enters it will find it cool and safe, and whoever does not enter it will be dragged into it."

This was also recorded by Ishaq bin Rahwayh from Mu'adh bin Hisham, and by Al-Bayhaqi in Al-I'tiqad. He said: "This is a Sahih chain."

It was reported by Ibn Jarir from the Hadith of Ma'mar from Hammam from Abu Hurayrah, who attributed it to the Prophet. Then Abu Hurayrah said: "Recite, if you wish:

'And We never punish until We have sent a Messenger (to give warning).'

This was also narrated by Ma'mar from 'Abdullah bin Tawus from his father, from Abu Hurayrah, but it is Mauquf (it was not attributed directly to the Prophet).

The Second Hadith from Abu Hurayrah

He said that the Messenger of Allah said:

"Every newborn is born in a state of Fitrah (the natural state of man), then his parents make him into a Jew or Christian or Zoroastrian, as animals produce whole animals - do you see any that is born mutilated (with something missing)?"

According to one report they said: "O Messenger of Allah, what about those who die when they are little?" He said,

"Allah knows best what they would have done."

Imam Ahmad reported from Abu Hurayrah that the Prophet - as far as I know - the narrator was not sure if it was attributed to Musa - said:

"The children of the Muslims are in Paradise, being taken care of by Ibrahim."

In Sahih Muslim it is reported from Iyyad bin Hammad that the Messenger of Allah said that Allah said:

"I have created My servants as Hunafa' [Naturally inclined towards pure monotheism or Tawhid]." According to another version, the wording is "as Muslims."

The Third Hadith from Samurah

In his book Al-Mustakhraj 'Ala Al-Bukhari, Al-Hafiz Abu Bakr Al-Barqani recorded the Hadith of 'Awf Al-A'rabi, from Abu Raja' Al-'Utardi from Samurah that the Prophet said:

"Every newborn is born in a state of Fitrah."

The people called out to him: "O Messenger of Allah! What about the children of the idolators" He said,

"And the children of the idolators too."

At-Tabarani reported that Samurah said: "We asked the Messenger of Allah about the children of the idolators, and he said,

'They are the servants of the people of Paradise.'"