And when My servants ask you, [O Muhammad], concerning Me - indeed (2:186)

Almuntakhab Fi Tafsir Alquran Alkarim

Should My servants call upon you, O Muhammad, for informing them about My attributes, then emphatically express that I am in their immediate proximity; I respond favourably to the humble petitioner’s prayer when he addresses Me. But those who aim for My blessings are expected to raise their internal consciousness, responding favourably to My system of faith and worship and believe in Me with faithful hearts, that they may hopefully be guided to the path of righteousness

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(2:186) And if My servants ask you, O Prophet. concerning Me, tell them that I am quite near to them. I hear and answer the prayer of the suppliant, when he calls to Me. So let them respond to My call and believe in Me. *188 Convey this to them, O Prophet; perhaps they may be guided aright. *189

And when My servants ask you, [O Muhammad], concerning Me - indeed meaning

*188). Even though people can neither see God nor subject Him to any other form of sense perception this should not make them feel that God is remote from them. On the contrany, He is so close to each and every person that whenever any person so wishes he can communicate with his Lord. So much so that God hears and responds even to the prayers which remain within the innermost recesses of the heart.
People exhaust themselves by approaching false and powerless beings whom they foolishly fancy to be their deities but who have neither the power to hear nor to grant their prayers. But God, the omnipotent Lord and the absolute Master of this vast universe, Who wields all power and authority, is so close to human beings that they can alway's approach Him without the intercession of any intermediaries, and can put to Him ther prayers and requests.
*189). This announcement of God's closeness to man may open his eyes to the Truth, may turn him to the right way wherein lies his success and well-being.
 

And when My servants ask you, [O Muhammad], concerning Me - indeed meaning in Urdu

اور اے نبیؐ، میرے بندے اگر تم سے میرے متعلق پوچھیں، تو اُنہیں بتا دو کہ میں ان سے قریب ہی ہوں پکارنے والا جب مجھے پکارتا ہے، میں اُس کی پکار سنتا اور جواب دیتا ہوں لہٰذا انہیں چاہیے کہ میری دعوت پر لبیک کہیں اور مجھ پر ایمان لائیں یہ بات تم اُنہیں سنا دو، شاید کہ وہ راہ راست پالیں