رَبِّ إِنِّى وَهَنَ الْعَظْمُ مِنِّى وَاشْتَعَلَ الرَّأْسُ شَيْبًا وَلَمْ أَكُنۢ بِدُعَآئِكَ رَبِّ شَقِيًّا

Rabbi innee wahanal-'azmu minnee washta'alar-ra'su shaiban wa lam akum-bidu'aaa'ika Rabbi Shaqiyyaa.

My Lord, indeed my bones have weakened, and my head has filled with white, and never have I been in my supplication to You, my Lord, unhappy.

Reference: Surah Maryam 19:4