2:174
إِنَّ الَّذِينَ يَكْتُمُونَ مَا أَنزَلَ اللّهُ مِنَ الْكِتَابِ وَيَشْتَرُونَ بِهِ ثَمَناً قَلِيلاً أُولَـئِكَ مَا يَأْكُلُونَ فِي بُطُونِهِمْ إِلاَّ النَّارَ وَلاَ يُكَلِّمُهُمُ اللّهُ يَوْمَ الْقِيَامَةِ وَلاَ يُزَكِّيهِمْ وَلَهُمْ عَذَابٌ أَلِيمٌ
Those who conceal Allah's revelations in the Book, and purchase for them a miserable profit,- they swallow into themselves naught but Fire; Allah will not address them on the Day of Resurrection. Nor purify them: Grievous will be their penalty.
16:66
وَإِنَّ لَكُمْ فِي الأَنْعَامِ لَعِبْرَةً نُّسْقِيكُم مِّمَّا فِي بُطُونِهِ مِن بَيْنِ فَرْثٍ وَدَمٍ لَّبَناً خَالِصاً سَآئِغاً لِلشَّارِبِينَ
And verily in cattle (too) will ye find an instructive sign. From what is within their bodies between excretions and blood, We produce, for your drink, milk, pure and agreeable to those who drink it.
24:45
وَاللَّهُ خَلَقَ كُلَّ دَابَّةٍ مِن مَّاء فَمِنْهُم مَّن يَمْشِي عَلَى بَطْنِهِ وَمِنْهُم مَّن يَمْشِي عَلَى رِجْلَيْنِ وَمِنْهُم مَّن يَمْشِي عَلَى أَرْبَعٍ يَخْلُقُ اللَّهُ مَا يَشَاءُ إِنَّ اللَّهَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ
And Allah has created every animal from water: of them there are some that creep on their bellies; some that walk on two legs; and some that walk on four. Allah creates what He wills for verily Allah has power over all things.
37:143
فَلَوْلَا أَنَّهُ كَانَ مِنْ الْمُسَبِّحِينَ
Had it not been that he (repented and) glorified Allah,
37:144
لَلَبِثَ فِي بَطْنِهِ إِلَى يَوْمِ يُبْعَثُونَ
He would certainly have remained inside the Fish till the Day of Resurrection.