2:51
وَإِذْ وَاعَدْنَا مُوسَى أَرْبَعِينَ لَيْلَة ً ثُمَّ اتَّخَذْتُمُ الْعِجْلَ مِنْ بَعْدِه ِِ وَأَنْتُمْ ظَالِمُونَ
Wa 'Idh Wā`adnā Mūsá 'Arba`īna Laylatan Thumma Attakhadhtumu Al-`Ijla Min Ba`dihi Wa 'Antum žālimūna 

And We appointed a meeting time for Moses of forty nights, but then you took the calf after him while you were wicked.

5:26
قَالَ فَإِنَّهَا مُحَرَّمَةٌ عَلَيْهِمْ أَرْبَعِينَ سَنَة ً يَتِيهُونَ فِي الأَرْضِ فَلاَ تَأْسَ عَلَى الْقَوْمِ الْفَاسِقِينَ
Qāla Fa'innahā Muĥarramatun `Alayhim 'Arba`īna Sanatan Yatīhūna Fī Al-'ArĐi Falā Ta'sa `Alá Al-Qawmi Al-Fāsiqīna 

He said: "It has become restricted to them for forty years, and they will be lost in the land." Do not be sorrowful over the wicked people.

7:142
وَوَاعَدْنَا مُوسَى ثَلاَثِينَ لَيْلَة ً وَأَتْمَمْنَاهَا بِعَشْر ٍ فَتَمَّ مِيقَاتُ رَبِّهِ~ِ أَرْبَعِينَ لَيْلَة ً وَقَالَ مُوسَى لِأخِيه ِِ هَارُونَ اخْلُفْنِي فِي قَوْمِي وَأَصْلِحْ وَلاَ تَتَّبِعْ سَبِيلَ الْمُفْسِدِينَ
Wa Wā`adnā Mūsá Thalāthīna Laylatan Wa 'Atmamnāhā Bi`ashrin Fatamma Mīqātu Rabbihi 'Arba`īna Laylatan Wa Qāla Mūsá Li'khīhi Hārūna Akhlufnī Fī Qawmī Wa 'Aşliĥ Wa Lā Tattabi` Sabīla Al-Mufsidīna 

And We appointed for Moses thirty nights and completed them with ten, so the appointed time of his Lord was completed at forty nights. And Moses said to his brother Aaron: "Be my successor with my people and be upright, and do not follow the path of the corrupters."

46:15
وَوَصَّيْنَا الإِنسَانَ بِوَالِدَيْهِ إِحْسَاناً حَمَلَتْهُ أُمُّه ُُ كُرْها ً وَوَضَعَتْهُ كُرْها ً وَحَمْلُه ُُ وَفِصَالُه ُُ ثَلاَثُونَ شَهْراً حَتَّى إِذَا بَلَغَ أَشُدَّه ُُ وَبَلَغَ أَرْبَعِينَ سَنَة ً قَالَ رَبِّ أَوْزِعْنِي أَنْ أَشْكُرَ نِعْمَتَكَ الَّتِي أَنْعَمْتَ عَلَيَّ وَعَلَى وَالِدَيَّ وَأَنْ أَعْمَلَ صَالِحا ً تَرْضَاه ُُ وَأَصْلِحْ لِي فِي ذُرِّيَّتِي إِنِّي تُبْتُ إِلَيْكَ وَإِنِّي مِنَ الْمُسْلِمِينَ
Wa Waşşaynā Al-'Insāna Biwālidayhi 'Iĥsānāan Ĥamalat/hu 'Ummuhu Kurhāan Wa WaĐa`at/hu Kurhāan Wa Ĥamluhu Wa Fişāluhu Thalāthūna Shahrāan Ĥattá 'Idhā Balagha 'Ashuddahu Wa Balagha 'Arba`īna Sanatan Qāla Rabbi 'Awzi`nī 'An 'Ashkura Ni`mataka Allatī 'An`amta `Alayya Wa `Alá Wa A-Dayya Wa 'An 'A`mala Şāliĥāan TarĐāhu Wa 'Aşliĥ Lī Fī Dhurrīyatī 'Innī Tubtu 'Ilayka Wa 'Innī Mina Al-Muslimīna 

And We enjoined man to do good to his parents. His mother bore him with hardship, gave birth to him in hardship, and his bearing and weaning lasts thirty months. So that, when he has reached his independence, and he has reached forty years, he says: My Lord, direct me to appreciate the blessings You have bestowed upon me and upon my parents, and to do good work that pleases You. And let my progeny be righteous. I have repented to You; I am of those who have submitted.