Accordingly, all four of the Islamic authoritative sources: Al Quran, Al Hadith, Al Ijmaa', and Al Qiyaas clearly imply that the body of a dead person needs to be buried into the earth.
Verses in the Quran that prescribe burial:
1. مِنْهَا خَلَقْنَاكُمْ وَفِيهَا نُعِيدُكُمْ وَمِنْهَا نُخْرِجُكُمْ تَارَةً أُخْرَىٰ ( سورة طه : 55)
“From the earth We created you, and into it We will return you, and from it We will extract you another time.” (20:55)
In the above verse, by stating that, after you are dead “We will return you” to the earth, Allah emphasizes the fact that, those who are deceased should be placed in the Earth.
The following verse clarifies the same:
2. قَالَ فِيْهَا تَحْيَوْنَ وَفِيْهَا تَمُوْتُوْنَ وَمِنْهَا تُخْرَجُوْن (سورة الأعراف : 25)
“He added, “There you will live, there you will die, and from there you will be resurrected.” (Quran, Al Ar’af: 25)