Allah Almighty says in the Qur’an:
“When my servants ask you concerning me, (tell them) I am indeed close (to them). I listen to the prayer of every suppliant when he calls on me.”[2:186]
Prophet (Pbuh) said
“Nothing is more honourable to Allah the Most High than du`a.” [Sahih al-Jami` no.5268].
He also said:
“The most excellent worship is du`a.”[Sahih Al-Jami` no. 1133];
Dua for ill person:
أَسْـأَلُ اللهَ العَـظيـم، رَبَّ العَـرْشِ العَـظيـم أَنْ يَشْفِيَكَ
Meaning:I ask Almighty Allah, Lord of the Magnificent Throne, to make you well. (Recite seven times in Arabic)
Dua When Faced with Grief or Sorrow
يَا حَيُّ يَا قَيُّوْمُ بِرَحْمَتِكَ أَسْتَغِيْث
“O Living One, O Self-existant One, by Your Mercy I seek help.”
Dua When Visiting the Ill
لا بأْسَ طَهـورٌ إِنْ شـاءَ الله
No need to worry. It (this illness) is a means of cleansing from sins, if Allâh wills.
Dua on Laylatul Qadr:
Aaisha (RadhiAllaho anha) reports: “I said: ‘O Messenger of Allah (Pbuh), should I find myself the “Laylatul Qadr”, what shall I pray.
The Prophet (Pbuh) replied: say,
‘Oh Allah, indeed You are most forgiving, You love to forgive, so forgive me.’