4قالَ رَبِّ إِنّي وَهَنَ العَظمُ مِنّي وَاشتَعَلَ الرَّأسُ شَيبًا وَلَم أَكُن بِدُعائِكَ رَبِّ شَقِيًّا(Saheeh International)He said, "My Lord, indeed my bones have weakened, and my head has filled1 with white, and never have I been in my supplication to You, my Lord, unhappy [i.e., disappointed]. Literally, "ignited." The spread of white hair throughout the head is likened to that of fire in the bush.