90 is indirectly mentioned when referring to 99

38:23
إِنَّ هَذَا أَخِي لَه ُُ تِسْع ٌ وَتِسْعُونَ نَعْجَة ً وَلِيَ نَعْجَة ٌ وَاحِدَة ٌ فَقَالَ أَكْفِلْنِيهَا وَعَزَّنِي فِي الْخِطَابِ
'Inna Hādhā 'Akhī Lahu Tis`un Wa Tis`ūna Na`jatan Wa Liya Na`jatun Wāĥidatun Faqāla 'Akfilnīhā Wa `Azzanī Fī Al-Khiţābi 

"This is my brother and he owns ninety-nine lambs, while I own one lamb; so he said to me: "'Let me take care of it' and he pressured me."