Al Baqarah, 186 Ayah
2:186
وَإِذَا سَأَلَكَ عِبَادِي عَنِّي فَإِنِّي قَرِيبٌۖ أُجِيبُ دَعۡوَةَ ٱلدَّاعِ إِذَا دَعَانِۖ فَلۡيَسۡتَجِيبُواْ لِي وَلۡيُؤۡمِنُواْ بِي لَعَلَّهُمۡ يَرۡشُدُونَ ١٨٦
Wa 'Idhā Sa'alaka `Ibādī `Annī Fa'innī Qarībun ۖ 'Ujību Da`wata Ad-Dā`i 'Idhā Da`āni ۖ Falyastajībū Lī Wa Līu'uminū Bī La`allahum Yarshudūna
And when My servants ask you, [O Muhammad], concerning Me - indeed I am near. I respond to the invocation of the supplicant when he calls upon Me. So let them respond to Me [by obedience] and believe in Me that they may be [rightly] guided.