If My servants ask you about Me, I am near. I answer the call of the caller when he calls on Me. They should therefore respond to Me and believe in Me so that hopefully they will be rightly guided. (Qur'an, 2:186)
"Praise be to Allah Who, despite my old age, has given me Isma'il and Ishaq. My Lord is the Hearer of Prayer." (Qur'an, 14:39)
Your Lord says, 'Call on Me and I will answer you. Those who who are too proud to worship Me will enter Hell abject.' (Qur'an, 40:60)
Nuh called out to Us and what an excellent Responder We are! (Qur'an, 37:75)
He Who responds to the oppressed when they call on Him and removes their distress, and has appointed you overlords on the earth. Is there another god besides Allah? How little you pay heed! (Qur'an, 27:62)