What is said about funerals, and those whose last words were: La ilãha ilallãh (none has the right to be worshipped but Allah)

وَقِيلَ لِوَهْبِ بْنِ مُنَبِّهٍ أَلَيْسَ لاَ إِلَهَ إِلاَّ اللَّهُ مِفْتَاحُ الْجَنَّةِ قَالَ بَلَى، وَلَكِنْ لَيْسَ مِفْتَاحٌ إِلاَّ لَهُ أَسْنَانٌ، فَإِنْ جِئْتَ بِمِفْتَاحٍ لَهُ أَسْنَانٌ فُتِحَ لَكَ، وَإِلاَّ لَمْ يُفْتَحْ لَكَ.Wahab bin Munabbih was asked, “Isn’t the saying: ‘La ilaha illallah (none has the right to be worshipped but Allah)’, the key of Paradise?” He replied in the affirmative, and said, “There is no key without teeth, and if you have the key which has teeth, it will open it for you, and if it is without teeth, then it will not open it for you.” ​​