19:4
قَالَ رَبِّ إِنِّى وَهَنَ ٱلْعَظْمُ مِنِّى وَٱشْتَعَلَ ٱلرَّأْسُ شَيْبًا وَلَمْ أَكُنۢ بِدُعَآئِكَ رَبِّ شَقِيًّا
qāla rabbi innī wahana l-ʿaẓmu minnī wa-ish'taʿala l-rasu shayban walam akun biduʿāika rabbi shaqiyyan
‘Lord, my bones have weakened and my hair is ashen grey, but never, Lord, have I ever prayed to You in vain:
He said: "My Lord! Indeed my bones have grown feeble, and grey hair has spread on my head, And I have never been unblest in my invocation to You, O my Lord!