Ibn 'Abbas said, "When the Prophet, may Allah bless him and grant him peace, visited a sick person, he would sit by his head and then say seven times, 'I ask Allah the Immense, the Lord of the Immense Throne, to cure you.' If the time of the invalid had not yet come, he would be cured of his pain."  

عَنِ ابْنِ عَبَّاسٍ قَالَ كَانَ النَّبِيُّ ﷺ إِذَا عَادَ الْمَرِيضَ جَلَسَ عِنْدَ رَأْسِهِ ثُمَّ قَالَ سَبْعَ مِرَارٍ أَسْأَلُ اللَّهَ الْعَظِيمَ رَبَّ الْعَرْشِ الْعَظِيمِ أَنْ يَشْفِيكَ فَإِنْ كَانَ فِي أَجَلِهِ تَأْخِيرٌ عُوفِيَ مِنْ وَجَعِهِ  

Ar-Rabi' ibn al-Hasan said, "I went with al-Hasan to visit Qatada. He sat by his head and asked after him and made supplication for him. He said, 'O Allah, heal his heart and cure him of his illness!"  

حَدَّثَنَا الرَّبِيعُ بْنُ عَبْدِ اللهِ قَالَ ذَهَبْتُ مَعَ الْحَسَنِ إِلَى قَتَادَةَ نَعُودُهُ فَقَعَدَ عِنْدَ رَأْسِهِ فَسَأَلَهُ ثُمَّ دَعَا لَهُ قَالَ اللَّهُمَّ اشْفِ قَلْبَهُ وَاشْفِ سَقَمَهُ