﴿ وَزَكَرِيَّآ إِذْ نَادَىٰ رَبَّهُۥ رَبِّ لَا تَذَرْنِى فَرْدًۭا وَأَنتَ خَيْرُ ٱلْوَٰرِثِينَ ﴾

“AND [thus did We deliver] Zachariah when he cried out unto his Sustainer: “O my Sustainer! Leave me not childless! But [even if Thou grant me no bodily heir, I know that] Thou wilt remain when all else has ceased to be!””

Please check ayah 21:90 for complete tafsir.