that the Messenger of Allah ﷺ said: "From the complete of visiting the ill is that one of you place his hand on his forehead" - or he said - "on his hand, and ask him how he is. And shaking hands completes your greetings among each other."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ تَمَامُ عِيَادَةِ الْمَرِيضِ أَنْ يَضَعَ أَحَدُكُمْ يَدَهُ عَلَى جَبْهَتِهِ أَوْ قَالَ عَلَى يَدِهِ فَيَسْأَلَهُ كَيْفَ هُوَ وَتَمَامُ تَحِيَّاتِكُمْ بَيْنَكُمُ الْمُصَافَحَةُ  

that the Messenger of Allah ﷺ said: "From the complete of visiting the ill is that one of you place his hand on his forehead" - or he said - "on his hand, and ask him how he is. And shaking hands completes your greetings among each other." (Using translation from Tirmidhī 2731)   

عَنِ النَّبِيِّ ﷺ قَالَ مِنْ تَمَامِ عِيَادَةِ الْمَرِيضِ أَنْ يَضَعَ أَحَدُكُمْ يَدَهُ عَلَى جَبْهَتِهِ أَوْ يَدِهِ فَيَسْأَلُهُ كَيْفَ هُوَ؟وَتَمَامُ تَحِيَّاتِكُمْ بَيْنَكُمُ الْمُصَافَحَةُ  

[Machine] The Messenger of Allah said, "The one who visits the sick is immersed in mercy." The Messenger of Allah then placed his hands on his knees and said, "When you sit with the sick, mercy surrounds him. And it is essential to the complete visitation of the sick that one of you places his hand on his face or his hand, and asks him how he is. The fullness of your love for one another is expressed through shaking hands."  

أَنَّ رَسُولَ اللهِ قَالَ «عَائِدُ الْمَرِيضِ يَخُوضُ فِي الرَّحْمَةِ» وَوَضَعَ رَسُولُ اللهِ ﷺ يَدَيْهِ عَلَى رُكْبَتَيْهِ ثُمَّ قَالَ «فَإِذَا جَلَسَ عِنْدَهُ غَمَرَتْهُ الرَّحْمَةُ وَمِنْ تَمَامِ عِيَادَةِ الْمَرِيضِ أَنْ يَضَعَ أَحَدُكُمْ يَدَهُ عَلَى وَجْهِهِ أَوْ عَلَى يَدِهِ فَيَسْأَلَهُ كَيْفَ هُوَ وَتَمَامُ مَحَبَّتِكُمْ بَيْنَكُمِ الْمُصَافَحَةُ»  

"مِنْ تَمَامِ عِيَادَةِ المرَيِضِ: أَنْ يَضَعَ أَحَدُكُمْ يَدَهُ عَلَى جَبْهَتِهِ أَوْ قَال: عَلَى يَدِهِ، فَيَسْألَهُ كَيفَ هُوَ؟ وَتَمَامُ تَحِيتِكُمْ بَينَكُمُ المُصَافَحَةُ".