The Prophets
وَذَا ٱلنُّونِ إِذ ذَّهَبَ مُغَـٰضِبًا فَظَنَّ أَن لَّن نَّقْدِرَ عَلَيْهِ فَنَادَىٰ فِى ٱلظُّلُمَـٰتِ أَن لَّآ إِلَـٰهَ إِلَّآ أَنتَ سُبْحَـٰنَكَ إِنِّى كُنتُ مِنَ ٱلظَّـٰلِمِينَ
And [mention] the man of the fish, when he went off in anger and thought that We would not decree [anything] upon him. And he called out within the darknesses, "There is no deity except You; exalted are You. Indeed, I have been of the wrongdoers."
Nearby ayahs help place verse 21:87 in sequence and meaning.
وَإِسْمَـٰعِيلَ وَإِدْرِيسَ وَذَا ٱلْكِفْلِ ۖ كُلٌّ مِّنَ ٱلصَّـٰبِرِينَ
And [mention] Ishmael and Idrees and Dhul-Kifl; all were of the patient.
وَأَدْخَلْنَـٰهُمْ فِى رَحْمَتِنَآ ۖ إِنَّهُم مِّنَ ٱلصَّـٰلِحِينَ
And We admitted them into Our mercy. Indeed, they were of the righteous.
فَٱسْتَجَبْنَا لَهُۥ وَنَجَّيْنَـٰهُ مِنَ ٱلْغَمِّ ۚ وَكَذَٰلِكَ نُـۨجِى ٱلْمُؤْمِنِينَ
So We responded to him and saved him from the distress. And thus do We save the believers.
وَزَكَرِيَّآ إِذْ نَادَىٰ رَبَّهُۥ رَبِّ لَا تَذَرْنِى فَرْدًا وَأَنتَ خَيْرُ ٱلْوَٰرِثِينَ
And [mention] Zechariah, when he called to his Lord, "My Lord, do not leave me alone [with no heir], while you are the best of inheritors."