20:115
وَلَقَدْ عَهِدْنَآ إِلَىٰٓ ءَادَمَ مِن قَبْلُ فَنَسِىَ وَلَمْ نَجِدْ لَهُۥ عَزْمًا
And We had already taken a promise from Adam before, but he forgot; and We found not in him determination.
Ta-Ha
وَلَقَدْ عَهِدْنَآ إِلَىٰٓ ءَادَمَ مِن قَبْلُ فَنَسِىَ وَلَمْ نَجِدْ لَهُۥ عَزْمًا
And We had already taken a promise from Adam before, but he forgot; and We found not in him determination.
Nearby ayahs help place verse 20:115 in sequence and meaning.
وَكَذَٰلِكَ أَنزَلْنَـٰهُ قُرْءَانًا عَرَبِيًّا وَصَرَّفْنَا فِيهِ مِنَ ٱلْوَعِيدِ لَعَلَّهُمْ يَتَّقُونَ أَوْ يُحْدِثُ لَهُمْ ذِكْرًا
And thus We have sent it down as an Arabic Qur'an and have diversified therein the warnings that perhaps they will avoid [sin] or it would cause them remembrance.
فَتَعَـٰلَى ٱللَّهُ ٱلْمَلِكُ ٱلْحَقُّ ۗ وَلَا تَعْجَلْ بِٱلْقُرْءَانِ مِن قَبْلِ أَن يُقْضَىٰٓ إِلَيْكَ وَحْيُهُۥ ۖ وَقُل رَّبِّ زِدْنِى عِلْمًا
So high [above all] is Allah, the Sovereign, the Truth. And, [O Muhammad], do not hasten with [recitation of] the Qur'an before its revelation is completed to you, and say, "My Lord, increase me in knowledge."
وَإِذْ قُلْنَا لِلْمَلَـٰٓئِكَةِ ٱسْجُدُوا۟ لِـَٔادَمَ فَسَجَدُوٓا۟ إِلَّآ إِبْلِيسَ أَبَىٰ
And [mention] when We said to the angels, "Prostrate to Adam," and they prostrated, except Iblees; he refused.
فَقُلْنَا يَـٰٓـَٔادَمُ إِنَّ هَـٰذَا عَدُوٌّ لَّكَ وَلِزَوْجِكَ فَلَا يُخْرِجَنَّكُمَا مِنَ ٱلْجَنَّةِ فَتَشْقَىٰٓ
So We said, "O Adam, indeed this is an enemy to you and to your wife. Then let him not remove you from Paradise so you would suffer.