قُلْ كَفَىٰ بِٱللَّهِ شَهِيدًۢا بَيْنِى وَبَيْنَكُمْ ۚ إِنَّهُۥ كَانَ بِعِبَادِهِۦ خَبِيرًۢا بَصِيرًا Qur’an Al-Israa (17:96)Qul kafa biAllahi shaheedan baynee wabaynakum innahu kana biAAibadihi khabeeran baseeran
'If you want a real witness, it is not these sorts of fancy miracles, but the witness of the true ever-living God. Purify your hearts, and ask Him in true contrition and repentance, and He will guide you and show you the Way'.