Surah Al-Nahl (The Bees), Verse 70

وَاللّٰهُ خَلَقَكُمْ ثُمَّ یَتَوَفّٰىكُمْ وَمِنْكُمْ مَّنْ یُّرَدُّ اِلٰۤی اَرْذَلِ الْعُمُرِ لِكَیْ لَا یَعْلَمَ بَعْدَ عِلْمٍ شَیْـًٔا اِنَّ اللّٰهَ عَلِیْمٌ قَدِیْرٌ 

Wallaahu khalaqakum suma yatawaffaakum; wa minkum many-yuradu ilaaa arzalil 'umuri likai laa ya'lama ba'da 'ilmin shai'aa; innal laaha 'Aleemun Qadeer

“It is Allah who creates you and takes your souls at death; and of you there are some who are sent back to a feeble age, so that they know nothing after having known (much): for Allah is All-Knowing, All-Powerful.”

Quran 16:70 (Yusuf Ali Translation)