The full narration is as follows:Sayyiduna Jabir ibn ‘Abdillah (radiyallahu ‘anhuma) reports that Nabi (sallallahu ‘alayhi wa sallam) said: ” When  one who has memorised the Holy Quran passes away, Allah Ta’ala reveals to the earth not to consume his flesh. The earth responds: ‘O Allah! How can I consume his flesh when your speech is in his heart?”.(Mu’jamush Shuyukh of Hafiz Ibn ‘Asakir, pg: 1214).വിശുദ്ധ ഖുർആൻ മനഃപാഠമാക്കിയ ഒരാൾ മരിക്കുമ്പോൾ അവന്റെ മാംസം ഭക്ഷിക്കരുതെന്ന് അല്ലാഹു തഅല ഭൂമിയോട് വെളിപ്പെടുത്തുന്നു. ഭൂമി മറുപടി പറയുന്നു: ‘അല്ലാഹുവേ! നിന്റെ സംസാരം അവന്റെ ഹൃദയത്തിൽ ഉള്ളപ്പോൾ ഞാൻ എങ്ങനെ അവന്റെ മാംസം തിന്നും?

However, the above Hadith is transmitted through an extremely weak narrator. ‘Allamah Dhahabi (rahimahullah) states that he has reported very weak narrations [manakir] as well as fabricated narrations. In another place, ‘Allamah Dhahabi states that he has reported extremely weak narrations as well as strange narrations. (Refer: Lisanul Mizan, vol. 1 pg. 701 -number: 914, Al Mughni Fid Du’afa, vol. 1 pg. 99 -number: 490.Also see Tanzihush Shari’ah, vol. 1 pg. 35)

 There are various other virtues of memorising the Quran, which should be quoted instead.

And Allah Ta’ala Knows best.

https://hadithanswers.com/an-unauthentic-virtue-of-one-who-memorises-the-quran/