In a halaqa with Shaykh AbdulAziz Ahmed he said that Allah calls out to His creation in the third part of the night and says “Who has woken up for My Rahma?” and in that moment all those who are awake will receive His Rahma (Mercy), even those who get up just to visit the toilet.
So next time we wake up for no real reason in the night, we should remember that Allah’s Rahma is upon us so we should call out to Him, thank Him for waking us up, and Praise Him. Subhan’Allah, Alhumdulillah, Allahu’Akbar.
When is the Last Third of the Night? Answered by Sidi Fadi Qutub Zada